Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f7e44adb3cfd8a…

MALICIOUS

PDF

51.0 KB Created: 2020-08-24 17:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c52a1a9da30234e2f427f1766aae2124 SHA-1: 61bcdaba1dd948a4633f4962ae6a2082e6c1a96e SHA-256: 67f7e44adb3cfd8acc358785abf84130632fd8758dc7d968d143b3217a330a67
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially garbled, contains text related to SQL formatting and includes the malicious redirector URL, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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=sql+format+currency+2+decimal+places In PDF document text
    • http://files.marianeth.com/uploads/1/3/1/1/131164556/fezubulanavufuf.pdfIn PDF document text
    • http://files.theoverflowingbookshelf.com/uploads/1/3/0/7/130740011/f9207f5ad535df.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/1/0440/1872/9125/files/16670563971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/brothers_images_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/2014_subaru_forester_maintenance_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/99915588448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7057/7058/files/mimuzigupekadaduzazaxagog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9935/6324/files/50034657880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0665/files/40925018587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/38947223385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/gifelotafalukexuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3156/8277/files/eduardo_galeano_cuentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2726/8503/files/95266464359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/mefuv.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
🗂 Part of campaign: retrochem.com 5 samples

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_off000075af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AF 5764 bytes
SHA-256: f6e069eb265927e5a9b7b3f3892a0c22c5c76ff515328fac31b5ada1fd32edf4
font_01_sfnt_off00008938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8938 16868 bytes
SHA-256: ee469484b629f9c06e0ae7879484f8799fe09934c627d785f2fd199a0ae3abd4

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