Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8f1121cb5fab3a…

MALICIOUS

PDF

54.6 KB Created: 2020-07-31 05:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 030cda730e10d8be0beca98fb9c1428e SHA-1: 8d8b8c94b2bf4fdffb0b29f1557bf1577bce229d SHA-256: ee8f1121cb5fab3aeb6c49e292c4032fbc8de87107c941630da7e39fcda9b8ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to a 'Calendario peruano 2020 pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the ultimate destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=calendario+peruano+2020+pdf In PDF document text
    • http://files.heroesofcolor.org/uploads/1/3/1/4/131453645/tasede_komasojanusomix_netirawirele_bivazeririsob.pdfIn PDF document text
    • http://files.polishkitchenestevan.ca/uploads/1/3/2/3/132303351/3078664.pdfIn PDF document text
    • http://files.victoria13gla.ca/uploads/1/3/1/8/131856234/risexupixeva.pdfIn PDF document text
    • http://files.boiseveteransdayparade.org/uploads/1/3/1/0/131069781/1522185.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/1/0438/1707/4850/files/21542584709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/7141556785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/93815426238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/25142477533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/raseribafopakipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/wirodadubegipuxeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/rigutinuvizuzaxajatidok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/jevomasumuwijozupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/wufamofodikefebozufumob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/dumatejugarebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1793/5770/files/78878926053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/96369075339.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEC 4956 bytes
SHA-256: a15bcd84de6d80899861dc425e4fdfd46be340cfad477dffea3dd474edbecc9e
font_01_sfnt_off00009ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECC 14648 bytes
SHA-256: b05e919cde237fa4079176b8ea72522123776bafa10ca81fe5f41652dd55ad0f

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