Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb3a40ce11a317a…

MALICIOUS

PDF

65.7 KB Created: 2020-08-26 10:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c31dee093e682919cbccfe0d3c2ad25b SHA-1: 355df335865d9ebc6c9b178789cb1126e5656024 SHA-256: fcb3a40ce11a317ab7c214dbee94a88e8c80dd62b137683271f7005d7800fd69
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is a strong indicator of malicious intent. The document body, though partially corrupted, includes the title 'Quien invento la pasteurización' and the same malicious URL, suggesting a lure to a phishing or scam page. The presence of numerous external PDF links, many pointing to benign Shopify URLs, suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector.

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.club/pify?keyword=quien+invento+la+pasteurizaci%25C3%25B3n In PDF document text
    • http://tewogu.divingtokyo.com/uploads/1/3/1/6/131607131/nudofusosuvo_fulonagu_fubixov_dibime.pdfIn PDF document text
    • http://files.freeshoestring.com/uploads/1/3/0/8/130814636/734372.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/1/0431/5129/4628/files/bjt_amplifier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/48292500155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/dukanetomudotuson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/zarafeparedinupilapajaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/worujevik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/cirrosis_hepatica_tratamiento_farmacologico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/bambi_vs_godzilla_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/nimukuxusidejizepipamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/devexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9563/6633/files/84816075118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9261/0977/files/ansiedad_psicologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/candyman_knockin_boots.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC6 5232 bytes
SHA-256: 69df073d92a28962a7e3c04602d37d2aa5a7f6004e5fe9eb4681c65da824d2ed
font_01_sfnt_off0000bc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6F 11872 bytes
SHA-256: 0a942fb9b585c65c0cc5092e56c9b118aa55f74185178645993b3d972e76dc6e
font_02_sfnt_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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