Malicious PDF — malware analysis report

Static analysis result for SHA-256 73dcd4be553ae029…

MALICIOUS

PDF

56.7 KB Created: 2020-08-21 06:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67f940c15ab1e83f679417737319a3b2 SHA-1: 53264fd66f0ef470c800a44b089524ce91fb70dd SHA-256: 73dcd4be553ae0290a8fbc65055f27fe36fed1e84fe0d664b08fb4fd4d8365ea
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links, many of which point to redirector infrastructure. The primary redirector URL is 'https://ttraff.com/pify?keyword=solitaire+game++apkpure', suggesting a lure to download potentially malicious applications. The document body, though heavily obfuscated, also contains this URL and numerous other PDF links, indicating a link farm designed to obscure the malicious destination.

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=solitaire+game++apkpure In PDF document text
    • http://bifesosew.ctbgbaskets.com/uploads/1/3/2/7/132740373/xakaxog-bumefirotuf.pdfIn PDF document text
    • http://files.otteraquatics.com.au/uploads/1/3/0/8/130813796/14b93e75e5fe.pdfIn PDF document text
    • http://dikota.journey-well.com/uploads/1/3/1/4/131438641/gunosafotit.pdfIn PDF document text
    • http://files.alexandradecandia.com/uploads/1/3/1/3/131379343/9b22d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/mejureziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8285/8144/files/honeywell_thermostat_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3847/4393/files/95515191519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/dudinoguxaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8480/7334/files/muwakoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/dark_souls_2_stats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/11365950408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/bmw_z4_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8430/0959/files/thyroid_gland_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/6490035790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4361/1036/files/perfect_sara_shepard_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/72317296080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0925/1240/files/beps_action_2_report.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FF 12320 bytes
SHA-256: ed9a23f4192475de9a996ae8ae336afb2d3da1fbc33c8d1bd75e923aee97c3a9
font_01_sfnt_off00009230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9230 4904 bytes
SHA-256: 1716a141624cc20cf7a648ace9d512624ababfdf01db430a8b466326fd87eb44
font_02_sfnt_off0000a2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E0 10584 bytes
SHA-256: 748210df1994c35a2dc9c0e46fb2a0e3dd97560b81995f2649286bebde1f3dd0
font_03_sfnt_off0000c707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC707 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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