Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46edc513324d1a9…

MALICIOUS

PDF

105.0 KB Created: 2021-03-20 21:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8ff282911545a53afbc3fed162771167 SHA-1: 96a3575cdc9e8d64d6bab14f8823638dc450d031 SHA-256: e46edc513324d1a9c19c44ba3bc4dbb82eb98d36f3e1bc2a20644f4f76ef1245
126 Risk Score

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 0.9988

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://bologen.ru/award?keyword=baldrige+excellence+framework+pdf+free+download PDF link annotation
    • http://gawajix.iblogger.org/45441938921.pdfIn PDF document text
    • http://vunibamom.22web.org/vogoseveb.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/jimjdqX/maze_medical_abbreviation.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/jt8igq7/82646075455.pdfIn PDF document text
    • https://puzamadexid.weebly.com/uploads/1/3/4/6/134640865/3992399.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/haifjaD/98660173021.pdfIn PDF document text
    • http://sesaruzuvibi.22web.org/46163812551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_603c21988bc2c.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/ghcgcBI/sumi_sumi_matching_puzzle_mod_apk.pdfIn PDF document text
    • https://lozibojugor.weebly.com/uploads/1/3/1/0/131069840/8158599.pdfIn PDF document text
    • http://jagojurezowu.22web.org/cablenet_vpn_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_5ff98dbaa454b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490251/normal_5fc7c6fd22307.pdfIn PDF document text
    • http://faxadiweruxu.22web.org/95386802303.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/656efcca-c623-44d2-8924-51ed6fda5a95/naval_reserve_personnel_center_new_orleans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b31c341-d089-4a70-a246-539e4c2f76ee/45107167465.pdfIn PDF document text
    • http://jidufatasakameg.epizy.com/how_to_reset_sanyo_tv_without_remote.pdfIn PDF document text
    • http://nozoxolopoju.rf.gd/how_writing_works_with_readings_ebook.pdfIn PDF document text
    • http://nikavavufuxirel.epizy.com/how_to_stop_losing_weight_after_gastric_bypass_surgery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e8dd9c-683a-4ee8-9e63-71f8898fc1d0/89888716429.pdfIn PDF document text
    • http://xamijofut.rf.gd/ninimubumalaganunebobum.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11938 5276 bytes
SHA-256: f0f2635390f36ff89008511c13aea5f2d4a2fbf1af762aa181778dc9e40ec3d3
font_01_sfnt_off00012b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B13 11460 bytes
SHA-256: fea6e2874aa51d64bd10b7ce658dcbd3a543e531f0705a091b06deaf91ddf4d0
font_02_sfnt_off00014afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AFE 11576 bytes
SHA-256: 3ac84d8324af0e15304610be16c146049a284ba5cf6fea01555d1334c461a643
font_03_sfnt_off000172be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172BE 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330
font_04_sfnt_off00018756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18756 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378