Malicious PDF — malware analysis report

Static analysis result for SHA-256 093d57444ed4cc3b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 12:38:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a50c346cb8cda228ba3a44b7d71d7ed4 SHA-1: 681051084b6f5ffaf53971b052a3a7fc80dc0424 SHA-256: 093d57444ed4cc3be5f82376f0ea69efefb75a9ab7d290f3cd12811fd401d3ac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector URL (https://ttraff.cc/pify?keyword=remove+watermark+pdf+mac+free) known for malicious activity. This suggests a phishing or scam attempt, likely using a lure related to 'removing watermarks' to entice clicks. The presence of numerous links to external PDFs, many hosted on Shopify, further supports the SEO link farm tactic.

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=remove+watermark+pdf+mac+free In PDF document text
    • http://files.klineseminars.com/uploads/1/3/0/9/130969172/8454922.pdfIn PDF document text
    • http://files.aninvisiblethreadnovel.com/uploads/1/3/2/6/132681863/tefurolim-pegovezoluvidig-gesiberek.pdfIn PDF document text
    • http://files.forestburgumc.com/uploads/1/3/1/3/131381363/fovimoxebudeduz_dasodubamimit_sozuxapuki_kofomaditados.pdfIn PDF document text
    • http://files.tabletalkcleveland.org/uploads/1/3/0/8/130873995/6030321.pdfIn PDF document text
    • http://files.mydesignpictures.com/uploads/1/3/1/4/131438541/8132906.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/1/0437/8152/1565/files/network_layers_osi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/excel_print_to_blank_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/hbs-_750_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/example_of_monitoring_and_evaluation_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/befapidopesuvixavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/wuduzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/nibodupetokupojula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/mejovazebusumuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/20372590412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/94641699953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/poptropica_survivor_island.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 8

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_off0000684c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684C 5316 bytes
SHA-256: 62e125ee4f43a7823be0a8a39a8fb43bd7ff48a646f00254f61614bfcab5b4c7
font_01_sfnt_off00007a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 10068 bytes
SHA-256: 48a4a0fbac69a55f057cca5d049339ebb56f6189b50a2bcc0c4bbbd5d054b32f

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