Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae70f32f7e2521df…

MALICIOUS

PDF

70.0 KB Created: 2020-12-18 02:24:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d4ec2b9caed2bd8a1045dd06d4009359 SHA-1: 719318feb8d536f8ed6b9ba313364dde86891d64 SHA-256: ae70f32f7e2521dfea3ddc888f9e632f8e46cf4cc0d52a8d5e887f04714895b7
262 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as an 'office activator'. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic to bypass gateway scanning. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
  • 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://traffine.ru/aws?utm_term=ativador+office+2016++ph In PDF document text
    • https://static.s123-cdn-static.com/uploads/4495246/normal_5fc5e85898afb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5f9a763ee301e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392444/normal_5f9121a9d4219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_5f9f81d468f19.pdfIn PDF document text
    • https://bimebupeku.weebly.com/uploads/1/3/4/7/134715010/xadojupo_baniseruzat_vizinim_dawotim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_5fbb46f1b8142.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fcf1a7aaffad1251da81296/t/5fd70f3dde5b1220c0421db7/1607929661790/70630568841.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfe9561e25426e1ff277f/1606286998206/central_route_to_persuasion_definition_example.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b09c1c59a74bd9921651/t/5fc9eeee196a600d3c355b79/1607069423184/rounded_corners_indesign_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a10c10d6a92a736d2eaf/t/5fcc4903978da30c56f22744/1607223558205/hello_dolly_louis_armstrong_lyrics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c5d3a3bf4b14abaf5581/t/5fc64614f81c9a2a0c791c8b/1606829588741/dungeon_nightmares_2_apk_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd56316f6d44b07b8b81c/t/5fc32684eaf37e3b640379c3/1606624901199/sherlock_holmes_basil_rathbone_black_and_white.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78a98bcf5f06bcb796135/t/5fcd24cb662d5e24e0aa687f/1607279820378/monogolf_level_451.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5180827a199023ad07c53/t/5fc6a8226457125654271e03/1606854692172/ball_hero_adventure_red_bounce_ball_level_5.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_off0000d535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD535 5564 bytes
SHA-256: 720fe5e391503f9875b3c55c7f947ed5d4e47d7e8c06ee0e4493da10e40134d3
font_01_sfnt_off0000e82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82F 10380 bytes
SHA-256: 0b6b4afbe6a213c2d270576347ef8e312c6c2f72073a6a81b4d90ce7be79dcb0

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