Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fe8adeef1ad5c0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 06:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0d3446baa58a4e007a6b865fd519db9 SHA-1: 0d5c8524d0403550b8998b06300bc61f4f38c7ea SHA-256: 74fe8adeef1ad5c0bb916bdb2a40500feed77068f55752027e44b64289ea1df8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.com', suggesting a phishing or malicious download lure. The document body, though heavily obfuscated, contains text that appears to be a worksheet title, indicating a social engineering pretext. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links supports a high confidence assessment.

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=exponential+regression+worksheet+algebra+2 In PDF document text
    • http://watiwaje.nicolerim.com/uploads/1/3/1/3/131383737/f945c.pdfIn PDF document text
    • http://files.patchesfamilycreamery.com/uploads/1/3/0/7/130776343/f2cb181f8.pdfIn PDF document text
    • http://files.entomoanthro.org/uploads/1/3/1/4/131483197/nizijeb_toririwinere_lunemepax.pdfIn PDF document text
    • http://wagiterap.cashmereboutiquespa.com/uploads/1/3/0/8/130813528/cdae0a4aed.pdfIn PDF document text
    • http://nozatit.moneymentorph.com/uploads/1/3/0/9/130969061/9379803.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/1/0434/4646/8769/files/add_ocr_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/4977050013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/hepatocellular_carcinoma_surveillance_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/56633252153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/50560522945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/86979499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2887/files/zapukisidumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/riwatajebekakaxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/wonodazemubikomelopifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1070/3010/files/free_metro_boomin_drum_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/38038383210.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_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 5536 bytes
SHA-256: ef2b608eb08fda222fd9e69e7cb187f20861a106a693fbafe7253b734cac1d81
font_01_sfnt_off0000768f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 10164 bytes
SHA-256: 68088926a53397e2b850298a62ef87da1b4f0ea93e51585dafc42595a6a413cc

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