Malicious PDF — malware analysis report

Static analysis result for SHA-256 178843414c2adb17…

MALICIOUS

PDF

43.3 KB Created: 2020-08-07 13:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63b8e6dd4e5c87b1b37f5a91fe65fef9 SHA-1: e6d4ead915863685a4d09a378182961338162cd7 SHA-256: 178843414c2adb17dc4cc4ea7fdfe78b487bfd6796ed011b49952e4e3d5b06d6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service that ultimately leads to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests a phishing or scam attempt designed to drive traffic to malicious sites.

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=bulimia+y+anorexia+nerviosa+pdf In PDF document text
    • http://files.2424nfederalhwy.com/uploads/1/3/2/8/132814030/2228314.pdfIn PDF document text
    • http://files.modernarchiveshop.com/uploads/1/3/0/8/130813612/7814000.pdfIn PDF document text
    • http://files.theplugalex.com/uploads/1/3/1/1/131164097/78d6e02e999654.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/1/0431/2032/8853/files/84763135097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/spectroscopic_properties_of_inorganic_and_organometallic_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0836/0611/files/ketogene_dit_einkaufsliste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/railway_alp_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/ratosigirolepamibifeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5327/5546/files/11766369245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/46713906707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/erving_goffman_asylums.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/64679696396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/assam_tet_admit_card_download_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/gegezofuletarerawekek.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: 2424nfederalhwy.com 5 samples

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_off00006b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B15 5464 bytes
SHA-256: 4a2052d3acf8fc80066b9d2e61cdbe67ed810765c1ffb4ce9b1ea1bd81288546
font_01_sfnt_off00007da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 10096 bytes
SHA-256: 364e4b4d724184b15899b35743cc64a1c22f69d38206dc00b47ef515141eee65

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