Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3f948b1895f947…

MALICIOUS

PDF

44.5 KB Created: 2020-08-17 12:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c3291a2f811d8eec3cb712378a37f69 SHA-1: c4d29f52ae3967827525462a33a623d9efd9c3b2 SHA-256: ed3f948b1895f947ce48a7aa816627a0b335ff9225674e4079664594ae64d4a4
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 'ttraff.cc'. The document body, though heavily obfuscated, appears to contain the same URL and references a 'chemical equations worksheet'. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is likely intended to lead the user to a phishing or malware distribution site.

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=chemical+equations+worksheet+7th+grade In PDF document text
    • http://files.ewoptx.org/uploads/1/3/2/6/132682892/b1685ad.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/1/0429/9191/1066/files/viwegolufutewojaziwoxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/strategic_planning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/68396189380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/mudorosusureritatawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/mathematical_physics_book_by_hk_dass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3433/7695/files/nujuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/prochlorperazine_davis_drug_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2247/4651/files/lezoxiwamikijevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/lidugijogap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4870/files/gixoberarifi.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_off00006c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7F 5620 bytes
SHA-256: 764d449a06f8dd92600d414f493866ac0169e52c85b903dc07adf239bee43a9c
font_01_sfnt_off00007f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 10468 bytes
SHA-256: 54f0e6721e68f89a87095028c027fc2d4e405f7483464bf074f5ce69474fc8da

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