Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66ed0b8ac53fea0…

MALICIOUS

PDF

37.2 KB Created: 2020-08-13 06:33:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e758b68052b295670149751d046e281 SHA-1: e8b7c53b2d819db2872419a439a7fc8a4ddc99d1 SHA-256: f66ed0b8ac53fea0abdb83df0737a0ae63135be7a33c689f0a632556c7df2d5b
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, specifically pointing to 'https://ttraff.com/pify?keyword=brothers+burger+menu+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for phishing or malware delivery. The presence of numerous other PDF links, as flagged by the PDF_SEO_LINK_FARM heuristic, further supports the attack pattern of using the document as a lure. No scripts were extracted from this sample, but the embedded URL is sufficient to classify the attack pattern.

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=brothers+burger+menu+pdf In PDF document text
    • http://files.nechesengineers.com/uploads/1/3/2/6/132683017/2256902.pdfIn PDF document text
    • http://files.nysfcja.org/uploads/1/3/1/6/131637169/sokidivibene.pdfIn PDF document text
    • http://files.jordanslavish.com/uploads/1/3/1/3/131398406/0abdf.pdfIn PDF document text
    • http://files.singlespark.nl/uploads/1/3/2/7/132741382/1a771236c.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/1/0433/7238/0318/files/the_economist_rss_feed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3277/5589/files/maps_googleapis_com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/39017977439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8866/6005/files/solidworks_electrical_black_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17673355306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/zivobuxamazidolilonebexuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/tavumezajozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0369/0660/files/java_generate_random_string.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5160/6435/files/togitewuvozoposo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/lirevevipu.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_off00004996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4996 5400 bytes
SHA-256: 8d2f1a11aabe35cde3d881bdd7eda448645fa75f8dcb13dad1ed3b46ead51486
font_01_sfnt_off00005bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD2 13500 bytes
SHA-256: 7dea41977b2ac358d122ba1eb0b30a8d64f8682c9bc7285870df0b3827dcb3ae

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