Malicious PDF — malware analysis report

Static analysis result for SHA-256 df49bdda902032a8…

MALICIOUS

PDF

54.6 KB Created: 2020-08-05 00:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b86238af937a5c1c7a1fa55351ad321e SHA-1: e09667b6b6169d100f202d83cc49ddb4bd709c72 SHA-256: df49bdda902032a8a7985c105b08ce661d1c31e8ee76d68a2126fddd94de614b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=argumentative+essay+examples+pdf'. This URL is presented within the document body, suggesting a social engineering lure to disguise the malicious intent. The PDF also contains a link farm, indicating a potential SEO poisoning or spamming campaign. The ML classifier strongly supports the malicious nature of this PDF.

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=argumentative+essay+examples+pdf In PDF document text
    • http://files.firstgradetweets.com/uploads/1/3/1/0/131070487/815682.pdfIn PDF document text
    • http://files.peninsulafap.org/uploads/1/3/0/7/130775402/6238674.pdfIn PDF document text
    • http://sejilizon.urbanrenewaljazz.com/uploads/1/3/0/9/130969204/fusamar.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/1/0434/0590/1991/files/86666525000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/63680367044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/how_to_archive_emails_in_outlook_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/24061755049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/fofatusimovituj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/tubogabopafudalazogixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/engineering_leveling_guide_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/7874938430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/53561068646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0381/0716/files/protter_morrey_calculus_analytic_geometry.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 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_off000095ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95ED 5580 bytes
SHA-256: d5fa41bd80938f69994a5bdbe74c7aa7b6ddda9b4dd68ed12aa0862ccb20e123
font_01_sfnt_off0000a8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8ED 10640 bytes
SHA-256: f8b4dc3a3250d6a689c7573c2b063b8e8783e711bfccbc46aaec79a7a640b4dd

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