Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c3b7c8d4a72bfee…

MALICIOUS

PDF

50.6 KB Created: 2020-10-15 20:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9ab6feda9535be533fa5b95e9b768ab0 SHA-1: d03e904399d16e483f2dd529f8cf975ef74ff591 SHA-256: 7c3b7c8d4a72bfee61d4bc206bac9b43d57c1897720240b6c1c5619a36b4b92a
154 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract users searching for product manuals. The primary malicious URL identified is https://gettraff.ru/pify?keyword=aspirateur+eau+et+poussiere+lidl+manual, which likely leads to a phishing or malware distribution site. No scripts were extracted, but the presence of numerous external links suggests a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/pify?keyword=aspirateur+eau+et+poussiere+lidl+manual In PDF document text
    • https://site-1041684.mozfiles.com/files/1041684/10631448802.pdfIn PDF document text
    • https://site-1040142.mozfiles.com/files/1040142/57826667247.pdfIn PDF document text
    • https://site-1043810.mozfiles.com/files/1043810/dejuwemexasobojak.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/14f0805.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7904132.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/bivapinoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/tengu_man_saturn_theme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/99866349332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/74491064047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2263/1067/files/85635148421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/lalulemelowameziguzef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9333/7281/files/17385217125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/puwudawagufina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7391/2488/files/nuwave_oven_elite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2405/9038/files/leforesobofazukuxubimef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9191/files/1320638885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1911/6449/files/lebokiresizawojulelezig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1881/6157/files/custom_arcade_cabinet_kits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/latent_heat_of_phase_change_problems_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8656/5542/files/types_of_high_heels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6432/6809/files/gilikawizagebalibadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3471/3495/files/vajuta.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_off000085da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 5092 bytes
SHA-256: 55eb13669ab59745b8c669bc9add0bdf142b804e6e27c16354b2fd2c3048c7db
font_01_sfnt_off0000970a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x970A 11448 bytes
SHA-256: fce83ec51dc998caeb52e48a2ab50d0a164c2a644a86bac5eea7915e18ab2d1d

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