Malicious PDF — malware analysis report

Static analysis result for SHA-256 f904c5da9000eee4…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 20:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4637904e7c863fb9d7d23db1c32e328 SHA-1: 3942d9f5ccf25f5d05afadfaadf25ce3c5d3dd04 SHA-256: f904c5da9000eee4cbd54a8f1c652eba63d9e66558d8f3fa66532852eab2ebfb
162 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=cara++video+dari+pinterest+di+iphone', which is likely used to redirect users to malicious content. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links.

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=cara++video+dari+pinterest+di+iphone In PDF document text
    • http://files.bestillmove.com/uploads/1/3/1/6/131606016/zupekuxuduti_midusolajawoli_kigodukanon_ruwadibili.pdfIn PDF document text
    • http://files.stewartsghinc.com/uploads/1/3/0/7/130739155/kobiguti.pdfIn PDF document text
    • http://files.dunbarparishchurch.org/uploads/1/3/0/8/130814127/1289233.pdfIn PDF document text
    • http://kaluxokuk.embracebotanicals.com/uploads/1/3/0/8/130874277/1907118.pdfIn PDF document text
    • http://files.bizraeli-anglo.com/uploads/1/3/1/6/131606397/764548.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/1/0443/3005/7884/files/biochemistry_satyanarayana_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/81637125934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/duruvedetewerunekigoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/wuwuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/chemistry_12_formula_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/30868110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/mivumiwetar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1630/6344/files/rojonoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/physics_giambattista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/taxegexigunoragunejeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/20333490938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/98364597541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/41600923483.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_off00006ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD5 4980 bytes
SHA-256: 11d58023035c234d8fb134beb7a02dd0496bcb95ee8268bad49d5d59565e587c
font_01_sfnt_off00007bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC1 12396 bytes
SHA-256: fb5c041412b74e3d98bdbb740cc24836cfd7cd66ec855e9791e8813b489ab98f

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