Malicious PDF — malware analysis report

Static analysis result for SHA-256 98065d0fb4c66d9f…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 13:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dac21b902a1393736db914c16e22ba90 SHA-1: df6928b19be7c45ac24a5c369760275dbbfc6bb5 SHA-256: 98065d0fb4c66d9f7d2b9b1c46a9e1a089073a934d3720b370a32fa30b61f827
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector infrastructure. The document body text, though heavily obfuscated, contains keywords like 'Siemens bq breaker pdf' and embedded URLs, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.

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=siemens+bq+breaker+pdf In PDF document text
    • http://files.deinehandwerker.ch/uploads/1/3/1/8/131857419/1394938359.pdfIn PDF document text
    • http://files.talkingaac.org/uploads/1/3/0/9/130969169/mawupufofijifepiduso.pdfIn PDF document text
    • http://files.mskhor.com/uploads/1/3/2/6/132682570/fewogedawox-xabuguj-dajelenudunexo.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/1/0429/6838/3641/files/sosumasegopizanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/87526736717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2494/9153/files/16314396108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/42019672084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/hhgregg_corporate_office.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/xomiwutezanebawagafabin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/48338543398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/tigobare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/denegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/pneumonia_kongenital_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/hp_office_5610_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/fatelenofazez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14985018959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/metode_argentometri.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_off00004b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B06 5588 bytes
SHA-256: 275470c613f48b9778f9f3e8cc80f4df4aca27755b26c9afd9ede16637317c3f
font_01_sfnt_off00005de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 11356 bytes
SHA-256: 4ba88f31e017096c5afb2b3db1ffd0ca1cdac130753dd7e0ff25a2704fa29957

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