Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d83270bcac6ea78…

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 01:36:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8257b25ffab05114ad0b3edca718ee3 SHA-1: 2eb46ce8f67c23b5b35e88b23a225a57689f279e SHA-256: 7d83270bcac6ea7895fa8021465c2741dc6571cf9405c9721259a22ac9f88291
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary link redirecting to a known malicious domain (ttraff.com). This indicates a phishing or scam attempt, likely to trick users into downloading further malware or providing sensitive information. 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.com/pify?keyword=brunnstrom+approach+techniques+pdf In PDF document text
    • http://xevegi.kelseysq.com/uploads/1/3/1/3/131380042/2396577.pdfIn PDF document text
    • http://files.bethluberecki.com/uploads/1/3/1/3/131384636/zedibakatugatuzem.pdfIn PDF document text
    • http://files.capitalaccesshk.com/uploads/1/3/1/6/131636764/wimowisaro-lesis-lireb-jaxikugewedax.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/1/0437/8597/8013/files/40774475430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6848/files/rolling_stones_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/wokaxinifuzufeviguxofuzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2204/6616/files/coliformes_totaux_et_fcaux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/jifemaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/food_analytical_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/3077615007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/utah_drivers_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/cards_against_humanity_geek_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6471/2616/files/78679331552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5981/7117/files/bio_data_form_for_job_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/minatomi.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 2

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_off000065e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 5540 bytes
SHA-256: 40ca8edab1f07715e065298777ee4c17cb4a576a0cdfd74aa5c4aa21d303a658
font_01_sfnt_off00007887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7887 10200 bytes
SHA-256: ec88bcf675f1d211ac48ea87de0aa5c3a33ca039bdd28afd2bdf580bfe02e430

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