Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e84e72ac426770f…

MALICIOUS

PDF

117.0 KB Created: 2021-04-07 08:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 24fa90949fb5454b5dd541678b10ba44 SHA-1: e153a82b221d2853495b03ea9c1801a27a91fd67 SHA-256: 3e84e72ac426770f31e3ce4050aebe287f9ae34951dfc41c58067e70c5c5bfc4
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/123?utm_term=dichotomous+key+aliens+answers PDF link annotation
    • http://fewudutizoxom.medianewsonline.com/39963918910.pdfIn PDF document text
    • http://hookup158.fun/jigazuwukisikomobiwina4zgpk.pdfIn PDF document text
    • http://twoup-viktoria.online/gekaxixisilusotafupovebojl2jy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390329/normal_60588bb52b060.pdfIn PDF document text
    • http://conicppjry.bid/kajiki87u2d.pdfIn PDF document text
    • http://sweetmeet.online/holland_lop_color_breeding_guideq2xy6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381101/normal_606428bde4908.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/internal_carotid_stenosis_treatment_guidelineseyjhd.pdfIn PDF document text
    • http://prazdnikprosto.ru/format_factory_for_android_freewsh09.pdfIn PDF document text
    • http://zovofuti.mygamesonline.org/bizupotet.pdfIn PDF document text
    • http://1offpark.xyz/tafolosibeves5axk7.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/acordes_de_acordeon_de_botones.pdfIn PDF document text
    • http://damvglaz2.xyz/10111181973yl5jz.pdfIn PDF document text
    • http://appletopshop.ru/mewaruxagogiwexezan8sbwx.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://s3.amazonaws.com/wewiro/lowrance_elite_5_hdi_balk_bulucu_ve_gps.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/drug_trafficking_in_colombia_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40883b96-6dd1-4629-b65e-fa04cc04ac49/4931021969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30adaaf7-d5bc-45fb-86b3-daf42fbd0277/93952111451.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/35279648350.pdfIn PDF document text
    • http://wozitoso.atwebpages.com/alphabet_matching_game.pdfIn PDF document text
    • http://kizufalugomux.atwebpages.com/daladowitedelexesejitafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a223059-8fb4-46e0-8c5a-75eec9fa81a4/original_dd_art.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A4 6744 bytes
SHA-256: a40094f7fc63366925dec32eab8d917fdd1492c05403ee3388595a7b79aa12d9
font_01_sfnt_off00013978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13978 1876 bytes
SHA-256: 3888d96b12bdff2b9d72d6f81e0da70ceda6a3ebce63ae2238fd70c94ed50a77
font_02_sfnt_off0001425b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1425B 5296 bytes
SHA-256: 3188de959403abca8e099136e88976a04fe86ded1507ced70165096237b607bd
font_03_sfnt_off00015456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15456 8708 bytes
SHA-256: 691448906455489bc34258cd4d061445b744e9ca0fd10f25dec9bb05a2e6852b
font_04_sfnt_off00016562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16562 1644 bytes
SHA-256: 305f78e9ea421339885397e357863348621db4eeea6212af7574a627be0cb597
font_05_sfnt_off00016db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DB4 14296 bytes
SHA-256: d5a6d0e86b2b9c186af8f9785866db95b497890841d5f2f45f32415b61882abd
font_06_sfnt_off00019e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E13 16452 bytes
SHA-256: d9bae74a7657c39c1f94da333a2cb781c6781a92e9b004cde5b160afb96f16be
font_07_sfnt_off0001b466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B466 6112 bytes
SHA-256: 3a5048badc18336368db00b6601139ec5ad822045e88a3db33b2de851ab4699e

Open this report in the interactive analyzer, or submit your own file for analysis.