Malicious PDF — malware analysis report

Static analysis result for SHA-256 2276a56775bc2bc9…

MALICIOUS

PDF

47.4 KB Created: 2020-07-31 08:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72ed331448f035d5f88b8054a3aba262 SHA-1: 7d244e65e9766eda14a90d3aea19fcdfb74b87e7 SHA-256: 2276a56775bc2bc911fb4fb28c2c5c7175e01bbe3ce5d065bc52160b0169f276
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=victoria+australia+road+map+pdf'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of a link farm heuristic further supports the malicious intent of redirecting users to external sites.

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=victoria+australia+road+map+pdf In PDF document text
    • http://files.christophmaximus.com/uploads/1/3/1/4/131407952/vumerojaliwigedibuji.pdfIn PDF document text
    • http://files.jakeshortakes.com/uploads/1/3/1/6/131606092/6d28ef5fac.pdfIn PDF document text
    • http://files.mindfulmamayoga.com/uploads/1/3/1/3/131383456/9475299.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/1/0432/2790/6206/files/27657196734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/deluzopokipejapuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/76131982362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/nixunerobijenefaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/zopudojexiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/tubaserojizox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/wubemavakusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/maforafewupobijara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/xururawuwemololo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.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_off00007d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 4924 bytes
SHA-256: 3d9c9860cd0006dda96dc52f0f4fa013c4cc1bb6f0fa3fa7cfe5c9aeb0b7681d
font_01_sfnt_off00008de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE1 10172 bytes
SHA-256: 2b4b28252eda96d24702e573e98a9d7ceabbbe70c5a4ed1742de0b6e9fd28260

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