Malicious PDF — malware analysis report

Static analysis result for SHA-256 4195eafa9d676323…

MALICIOUS

PDF

54.5 KB Created: 2020-08-04 18:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a838ef8e9f7611da0ca3ad0c13cd59e SHA-1: 8961a8205b19a2c16d176b37f9e0ee796b2118bd SHA-256: 4195eafa9d67632337b483a8d4e3138302ec3b54f3a7f4c6389fb140f8cc5bb4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=temporal+difference+learning+pdf', which likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains this URL and another benign-looking Shopify URL, suggesting a lure to a malicious site. No scripts were extracted, but the PDF structure and link farm indicate a social engineering attempt.

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.cc/pify?keyword=temporal+difference+learning+pdf In PDF document text
    • http://files.elizabethaknox.com/uploads/1/3/0/8/130873717/6728640.pdfIn PDF document text
    • http://files.catherinewhitaker.com/uploads/1/3/2/7/132710627/zanotefug.pdfIn PDF document text
    • http://files.vodousorcerer.com/uploads/1/3/2/6/132680915/kaziw-xilegitubeku.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/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41697505155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/18524779206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/jizeluni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/62977545959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/the_walking_dead_s06e04_kickass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/danowode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/pekijilamolofibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/8487807211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/magatuzadibufexetisakopix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8628/8798/files/xumuwutakinude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/62439094581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/zeweritekowinujavupuv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9115 5244 bytes
SHA-256: 82c503ac3ddecc4e9d4a9482a85826d405f0a20417ee1e03775e8661f71a995a
font_01_sfnt_off0000a2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D7 13240 bytes
SHA-256: 1b8bd187c6cd28865297dd2ed2bc12b2de367fc8319978072ba410199e323aed

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