Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d61b13ae7b38e6d…

MALICIOUS

PDF

34.8 KB Created: 2020-08-15 05:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b0d09706d533412158ab6bb7d100b5d SHA-1: 8dc85f60155049e4227cf400ca241c7d3049d8a3 SHA-256: 9d61b13ae7b38e6da79d03660df02cd80ead6f91eb0916412eafaa8d4c6fddd3
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.ru/wb?keyword=ring%20video%20doorbell%20pro%20owners%20manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though partially corrupted, contains text related to a 'Ring video doorbell pro owners manual' and the malicious URL, suggesting a lure to a potentially malicious site disguised as a manual download. No scripts were extracted from this sample.

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.ru/wb?keyword=ring%20video%20doorbell%20pro%20owners%20manual In PDF document text
    • http://files.farberresumes.com/uploads/1/3/1/8/131871721/bojalegokopisaf-konabeso.pdfIn PDF document text
    • http://files.aerospectech.com/uploads/1/3/1/3/131380213/180540.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/1/0434/7461/6472/files/best_reader_for_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/73005796314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/52992306716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/mujepuzebijavajonep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2358/6712/files/bronchiectasis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/nonutezotulemeviluzolod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9387/1016/files/duzifodoveluvipawevetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/xagumujogefire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/63758074725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5068/7903/files/39772727577.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FCA 5380 bytes
SHA-256: cf6d5428174361e6484a92cfbed3a385589b640293db1d2af75b2572893306b0
font_01_sfnt_off000051fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FA 8984 bytes
SHA-256: 2d14f901d9a1d6376dc0f9b8d38926a42286ca11cc73fcaf195084e6ba7fff5a
font_02_sfnt_off0000705d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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