Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f28f157e82f08a…

MALICIOUS

PDF

49.0 KB Created: 2020-08-12 11:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 105073650c1ba066c0606c9832df2dc4 SHA-1: 8fed1b62805a59dc193eb5da92646b21de6c8231 SHA-256: 75f28f157e82f08a6a0478de36e2c4be22b4330244f5ef1a5c3025a2716545db
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to a redirector infrastructure associated with malicious activity. The document body itself contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose of the document is to lure users to malicious sites, likely for phishing or malware distribution.

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/wb?keyword=generate%20pdf%20c#%20asp.net In PDF document text
    • http://files.jtmcreativedesigns.com/uploads/1/3/1/4/131406537/0359f57b679e1.pdfIn PDF document text
    • http://files.yidaistudio.com/uploads/1/3/1/3/131398188/3668810.pdfIn PDF document text
    • http://files.sannafineart.com/uploads/1/3/1/4/131482944/805724.pdfIn PDF document text
    • http://files.turkanaempowermentproject.org/uploads/1/3/0/7/130738956/vowunakomebuwe_bijiniz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9949/files/99880225008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/botefig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/17857332888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/sebowabebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/kukudeguwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2093/3528/files/wegipojifugezidupubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/jamusekibiberefusetugaris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/98666579810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/28907276821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/49935167224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/malawaxofusikunej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/budget_line_economics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/leraniladiwemipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/kotor_2_handmaiden_jedi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000673a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673A 4600 bytes
SHA-256: a9af028cb6903668e64214b4880faf71a4a71a1a031d9624d5e7c58c20395473
font_01_sfnt_off000076e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E1 15108 bytes
SHA-256: 79cd9c56414c1a2a0c5fb7152382f95b2dcb51dd6c236b21b4a3ffb0549109b4
font_02_sfnt_off0000a702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA702 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f