Malicious PDF — malware analysis report

Static analysis result for SHA-256 3716d1b7f9b51f42…

MALICIOUS

PDF

43.7 KB Created: 2020-08-27 16:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7590969043a10d8bbf3c1ee12f1d1e4e SHA-1: b0a3ee1d079d4c509d7a4a14081d0ea593210676 SHA-256: 3716d1b7f9b51f423bae2a29741eb8e711dbaf9e969e838a68e6ce1d33272bdf
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary redirector URL. The presence of numerous links, many pointing to Shopify domains, suggests a link farm or redirection strategy to mask the ultimate malicious destination. No scripts were extracted from this sample.

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=modelo+clasico+macroeconomia In PDF document text
    • http://files.stellarcarevacations.com/uploads/1/3/2/7/132741109/5032976.pdfIn PDF document text
    • http://files.etamucaliforniadkg.org/uploads/1/3/1/0/131070160/kubalupepololivamiw.pdfIn PDF document text
    • http://files.prevedelli.com/uploads/1/3/1/4/131453252/1c32c2b6.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/1/0429/9964/4314/files/83595210199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/38183802571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/zaliguvigivogoluxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mafimovudowejiner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/23559587776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/93446318102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/72490002953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/spinal_arachnoiditis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/the_seven_chakras_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8530/6782/files/37769924770.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 7

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_off00006263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 5088 bytes
SHA-256: bcf7cc03352fecdb88c67600ba51f79cd5957507cb4384e38bcf421e707c18d3
font_01_sfnt_off00007396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7396 14820 bytes
SHA-256: 7910f2358ff1488f6d3f6f1f23b439fa8faa8d3959931ed752add0eb9d5e1128

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