Malicious PDF — malware analysis report

Static analysis result for SHA-256 780060903e046aaa…

MALICIOUS

PDF

79.4 KB Created: 2021-04-02 15:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 18a9a948c043714f56b6e3a32a585d46 SHA-1: 1acbdb6db1a4818d42817f227e59731a8a8f405b SHA-256: 780060903e046aaa4cb02db38e0a3a223e6a5e36207928b9520330379a080630
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://nipisod.ru/wix?keyword=nico+the+pro+commands PDF link annotation
    • http://lazadacostumercenter.com/samsung_ce0168_tablet_specificationsmrhxz.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/zevukebetoki.pdfIn PDF document text
    • https://wemafijape.weebly.com/uploads/1/3/4/7/134775870/miwov_nabixerefivix_rafeg.pdfIn PDF document text
    • http://ruwazumusef.scienceontheweb.net/88506674547.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/jgir3hi/scooby_doo_zombie_island_villains_wiki.pdfIn PDF document text
    • http://b0xberry.online/bulthaup_b1_preisliste186tt.pdfIn PDF document text
    • http://rogijowop.sportsontheweb.net/cerfa_fa13.pdfIn PDF document text
    • https://cdn.sqhk.co/rufetuzek/gggdidE/principles_of_management_notes_for_bca.pdfIn PDF document text
    • http://edayafar.xyz/19160553123lx8pi.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/presonus_firepod_interface.pdfIn PDF document text
    • http://feedbacrnz.space/95563759451a4fyo.pdfIn PDF document text
    • https://nopuwilimo.weebly.com/uploads/1/3/4/4/134490360/9ce8f31.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/getedejitenotuvefed.pdfIn PDF document text
    • http://helpcreditscore.info/57441312013a70gn.pdfIn PDF document text
    • https://gavozosalaz.weebly.com/uploads/1/3/1/1/131163920/funaf.pdfIn PDF document text
    • http://wusator.mygamesonline.org/98113584544.pdfIn PDF document text
    • https://kokagajimixepu.weebly.com/uploads/1/3/5/3/135331661/52345b8db012.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/anxiety_relief_techniques.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6392e7bc-17ff-4c13-9f7a-b87dd8985cfe/draw_a_man_test_introduction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d067b98-785e-40cb-90c2-d4b79b29f0b0/90537337502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42659f2e-17e1-47ff-8963-0b2243e52ba8/77959257609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412deab9-0318-4eeb-9926-32489f484d1a/muwugonewoluvafepidozef.pdfIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/71943340905.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE753 5252 bytes
SHA-256: c2dce59cbf5c6385235f378a3b88f03ff030f9bd385be382141a97371d92fee3
font_01_sfnt_off0000f903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF903 16904 bytes
SHA-256: 286f1cf2acfaac3fc9619768ba9e8a0cd9370ad2e606ed3ee6d8f95a557b1152

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