Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c473728fc14956c…

MALICIOUS

PDF

99.8 KB Created: 2020-08-17 05:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3f84b5621ed6852e30cbad948148a7e SHA-1: 43fae6a7371d71f9d41efeaa0ca7894deb8e3409 SHA-256: 1c473728fc14956cf30e49c4ec1d305d32a5fd578d584a9349fc8128598cb87d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous links to external PDFs, many hosted on Shopify. The ML classifier strongly indicates 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.
  • 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.com/pify?keyword=lasting+power+of+attorney+guide In PDF document text
    • http://zuxizutow.valleyalternativehealing.com/uploads/1/3/1/4/131407263/247433.pdfIn PDF document text
    • http://files.francisfamilyblog.com/uploads/1/3/0/8/130874161/c7150.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/1/0448/1646/6082/files/amarula_cocktail_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/numeros_romanos_ejercicios_primaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/xiginolidibipuxiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0925/2250/files/sewedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/bts_wallpaper_hd_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/banedomivof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/datelatoranemazifovoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/tech_n9ne_mp3_skull.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8130/1158/files/dubagifirobev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/34173290245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5330/0377/files/guxabuvagopadesi.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: psichicpp.com 3 samples

Related samples 4

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_off00014bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC2 5312 bytes
SHA-256: d81cb236b2bd34ea285e5e5f0cd793bc506840d66f92b04c2649b9f9d1c0eb87
font_01_sfnt_off00015dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DFA 10520 bytes
SHA-256: a372b49b0523a468b6f6c3c823ae93c36f221efe17c0def7710e096614253718

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