Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a466c1a2aa33698…

MALICIOUS

PDF

40.5 KB Created: 2020-08-21 19:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3782fc51cf7bebfe16fa1116b5507a76 SHA-1: 2008f4ae9ec3ebf55aef2f3f5f8e0ae76c1b8253 SHA-256: 7a466c1a2aa33698220bffd6e7c647de1c3294aa3bba0033018eeec647d24a5e
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a calculator app download. This link leads to a link farm of 24 other PDFs, suggesting a coordinated effort to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links reinforces this 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=calculator+app++please In PDF document text
    • http://gejuwoxe.saclegalprep.com/uploads/1/3/2/7/132712237/buridulof-nofusavuselazi-fetimowas.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/1/0428/4914/0902/files/50785562717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/98193039583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogazuzotefoninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/basics_of_computer_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/cornerstone_chords_e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1686/2371/files/ftb_revelation_changelog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/93989677498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/givukasin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4429/8133/files/kotumutiwibagowasezexali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4248/8998/files/90405024191.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_off000062ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 4832 bytes
SHA-256: 0701cd1e6b9b1c6d11a39d768831b0b247630da16fee93818f94f31364284fc9
font_01_sfnt_off00007365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 10100 bytes
SHA-256: 45e9fe8d34bbe22ead38b19e2df0358bba8049288e78031bf3eef5195a3ac325

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