Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e43df3ed95b9f73…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 07:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b355beaf74dd22787bc3555a76593b0 SHA-1: 0b7e9eed694fcda6552a1d2e31163a13f08fcb16 SHA-256: 7e43df3ed95b9f73ad807430c3004564d78fe9ea59300925c12851c469ef2e20
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) disguised with search terms like "Chinatown movie mp4". This suggests a link farm or phishing lure designed to redirect users to malicious content. 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.
  • 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.com/pify?keyword=chinatown+movie++mp4 In PDF document text
    • http://resiferim.allsaintshighwycombe.org/uploads/1/3/0/7/130776819/lupane_wepomegijumev_nolab_kukawez.pdfIn PDF document text
    • http://files.inibus.co/uploads/1/3/2/7/132711966/pavagu.pdfIn PDF document text
    • http://files.ronkachelmeier.com/uploads/1/3/1/4/131406947/jedasuripupidarej.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/1/0445/5114/3588/files/brgschaft_wohnung_muster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6640/8603/files/manual_casio_fx_570ms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/55153555511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/gidoxidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4079/2727/files/celulas_falciformes_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/c_vs_k_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8509/3272/files/rupotawunun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2848/files/riwakakonek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/clinical_examination_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/13156667602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/29402733509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7827/0619/files/9377918363.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 8

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_off000062ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EC 4900 bytes
SHA-256: 4dab54cbc721fdac537c1f06fbbc70a2ef29e5664c8f73fb35d4a920a3ff9a7c
font_01_sfnt_off00007389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7389 10552 bytes
SHA-256: 4cc26fe0dd2cf740f217d694a2130196c19f73659a7dcf4e2a202e6c0faa72c4

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