Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc5350c52255b3f…

MALICIOUS

PDF

41.1 KB Created: 2020-07-28 09:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93646477fb048f45004665e9652c361e SHA-1: 8747535ec6107629f9b9ee2c522aad7af8fc24b5 SHA-256: abc5350c52255b3f8b574365b1eaba25de58ef2247632263a0c0402bba629ecd
194 Risk Score

Malware Insights

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

The PDF file contains a link farm, with multiple embedded URLs pointing to various PDF files hosted on Shopify. One of these URLs, 'https://ttraff.ru/pify?keyword=composition+of+functions+practice+worksheet+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'composition of functions practice worksheet answers'. The primary attack pattern involves redirecting users to malicious infrastructure through a deceptive document.

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=composition+of+functions+practice+worksheet+answers In PDF document text
    • http://files.lahlitah.com/uploads/1/3/1/6/131606003/kinijoxavezunazujemo.pdfIn PDF document text
    • http://files.reformanortheast.org/uploads/1/3/0/8/130873708/tovodir.pdfIn PDF document text
    • http://files.emanuellutherandaycare.com/uploads/1/3/1/4/131483097/2894733.pdfIn PDF document text
    • http://files.stephaniepercydoula.com/uploads/1/3/0/7/130775635/1474063.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/1/0432/0778/6654/files/86245743775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/jimokaxizufitebevifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/93407224916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/84084707894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56655156305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4831/2738/files/57577219742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/takitirovotagunasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2428/4824/files/42553499952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90142435821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/nibovenuwiwawitenevok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8868/2916/files/6043538109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/59466735989.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_off00006103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6103 5284 bytes
SHA-256: ee6e6029dc633bb0db2893327bcf4a535b8453552d8b69a1dd0dba56e959c843
font_01_sfnt_off000072e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E3 10052 bytes
SHA-256: cf24bb1d1f238142693590f4df6e7d57b30d31df7bac001eddf80e6764039e46

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