Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead6b4cf9c41c6c3…

MALICIOUS

PDF

39.6 KB Created: 2020-08-21 03:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a47e9b801c7e6ea114886959dbf9a7d SHA-1: 0514d478a4af2cc98bab8defff777d64fa12bc9d SHA-256: ead6b4cf9c41c6c307bd5b70a8d569f4bba2f6089a32b8f37160183faeffd33a
202 Risk Score

Malware Insights

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

The PDF document contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=analogias+y+distribuciones+ejercicios+resueltos+pdf`, which is flagged as malicious. This indicates a phishing or scam attempt designed to lure users to external sites. The presence of a 'download button' lure further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://ttraff.ru/pify?keyword=analogias+y+distribuciones+ejercicios+resueltos+pdf In PDF document text
    • http://files.joyofchristpress.com/uploads/1/3/0/7/130739831/0bd10c784.pdfIn PDF document text
    • http://pifolij.palmspringsappliancerepairpro.com/uploads/1/3/1/6/131637881/3f081c6895a.pdfIn PDF document text
    • http://files.hrkcmo.org/uploads/1/3/1/4/131438111/visix.pdfIn PDF document text
    • http://files.battlecreekbehavioralhealth.com/uploads/1/3/0/9/130969371/kivezajonifow.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/1/0437/2247/3624/files/24810377138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/61735313768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/maquis_historia_de_la_guerrilla_antifranquista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/befina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/natalia_starr_swallow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/company_structure_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/bilalana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/46075339567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/mojovafuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/asperger_syndrome_and_difficult_moments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/konsep_dasar_pendidikan_agama_islam.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 4

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_off000057df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57DF 5632 bytes
SHA-256: 8a9e0c3a6c33534590bf8e36c728484836bfe19c29afe91c0e5107330dce1c1d
font_01_sfnt_off00006b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B17 11220 bytes
SHA-256: 8908cd5087683339b6955c5e2fd7f6beaa4060f3340c824202f3959fe82168f7

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