Malicious PDF — malware analysis report

Static analysis result for SHA-256 273e136100ae8035…

MALICIOUS

PDF

36.3 KB Created: 2020-08-06 19:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28ba178af71897129d1a7348a1319356 SHA-1: 2a74d975ae97c303cab3686de21da9ac61f667d7 SHA-256: 273e136100ae803511c9eef70ac355668e42f76e3ca0408ef5fc11ec1f439227
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=watchmen+comic+pdf+online', suggesting a lure to download content. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document.

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=watchmen+comic+pdf+online In PDF document text
    • http://files.lldrq.com/uploads/1/3/1/4/131438161/2338186.pdfIn PDF document text
    • http://files.womensselfdefenseftmyers.com/uploads/1/3/0/8/130874587/tawigam-jofivom-pakuzonujisaxa-xojilitiw.pdfIn PDF document text
    • http://files.rebeccabelldressage.com/uploads/1/3/1/4/131453432/8443137.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/1/0437/7044/5973/files/gamipigabume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/dixasibegokaxuxizonitor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/diwavobarorakeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6701/4297/files/affinity_designer_workbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/86839973654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/93235092682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/japanese_iptv_m3u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/javisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/cz_75_armorers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/30643766526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/45226218620.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4580 4924 bytes
SHA-256: b8958ae631612036c44eaea9c28ccaf564fa0849fa1ff61e21a28a4dab4d7404
font_01_sfnt_off00005620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5620 9464 bytes
SHA-256: 70d54fe79cdf84db71231a0750e4e8307acb9f2b6bfe9c553bb42c96b92e317b
font_02_sfnt_off0000768d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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