Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ed1333dc3695a0…

MALICIOUS

PDF

45.7 KB Created: 2020-08-18 21:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51e5f32ee98b77533a97046377244d3a SHA-1: e7f31ef08a35a1234908e7d8e2b949ea5c95a0b8 SHA-256: 56ed1333dc3695a0fa1866ba6438ad5494f0f4be3f5b4a38fbe8b66e0de99e4b
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=general+knowledge+test+papers+with+answers'. This URL is presented within the document body, disguised as a link to test papers with answers. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing attempts.

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.cc/pify?keyword=general+knowledge+test+papers+with+answers In PDF document text
    • http://latepanog.fdfdoodles.com/uploads/1/3/2/3/132303195/milebosava_golajemu_xutogitikutede_werenulex.pdfIn PDF document text
    • http://files.teachingkidstothrive.com/uploads/1/3/1/8/131856715/8596130.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/1/0433/4895/1194/files/segokirufexevudofaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/tufenidaburili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/zofujasunimiwafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/15228479865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/vunapin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/jomibofiwebagajasineperon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/99961969604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6848/9881/files/kiran_bank_maths_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/69841984094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/2496780669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/11664484356.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 5

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_off00006dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEC 5408 bytes
SHA-256: 8a0d1948cb8339c6921503128318092556f18bade07f5cb5a337b8cf354f0296
font_01_sfnt_off00008068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8068 13068 bytes
SHA-256: ce3fdde8dbbd5009082e1bd5dce6ee27b139283bc740a15cf5a11d562e67b6a0

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