Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce87c3b98f61e2b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-28 06:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 036935ae47a5ef3cb30eff6b77777264 SHA-1: 115b67229b71649359c5c2318bd98a7075fcc426 SHA-256: 0ce87c3b98f61e2b6acedb5318a8761286e798721408db27b294149f382c4abf
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=volkswagen+touareg+2017+manual', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to a Volkswagen manual, suggesting a lure. The presence of numerous other PDF links, many pointing to Shopify domains, indicates a link farm or SEO manipulation tactic, likely to obscure the malicious redirector. No scripts were extracted, but the PDF structure and malicious link strongly suggest a phishing or scam attempt.

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://ttraff.ru/pify?keyword=volkswagen+touareg+2017+manual
    • http://tiles.mounthollywood.org/uploads/1/3/1/3/131380600/jajegijupozivo.pdf
    • http://files.pumpeebaby.com/uploads/1/3/1/4/131408170/joruk_zajelateze.pdf
    • http://files.reclaimdesignz.com/uploads/1/3/0/7/130738741/kemorixopopito-pefewokeligola-liravuzivutab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/pefixut.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/masumojewipidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5645/6095/files/sikumovutijutopozepinida.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/laboratory_manual_for_pulse_width_modulated_dc_dc_power_converters.pdf
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/peratizesiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/domestic_animals_colouring_pages.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/zen_stories.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/penolasapanabarinujipemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/93563252184.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/vigijuloru.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/crazy_craft_2._0_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/dexutewo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006540.bin
1f91756340da89b3692bf9c3cb13f785b4b91d0c36915edac0b9b8ecfb01e706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6540 5532 bytes
font_01_sfnt_off0000781c.bin
932c3e01e65ad238ba38605c9ddc9aebae490d335d462ef6ab7c4e05591aca0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781C 10012 bytes

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