Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb0a84bbe25b6c2…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 02:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b37f9baa261f906c8b7028a491f658c SHA-1: 917f255049fa624a91676d3340cd84709788d5d6 SHA-256: dbb0a84bbe25b6c2dd4ae35204593e3f92056871f2ba9d89f48ca09aeaa348e6
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text fragments related to 'e filing' and '26as form', suggesting a lure for financial or tax-related phishing. The heuristic 'SE_MFA_LURE' further indicates an attempt to harvest credentials or session tokens by mimicking a multi-factor authentication prompt. The presence of a link farm also suggests an attempt to game search engine results for broader reach.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/pify?keyword=e+filing+26as+form In PDF document text
    • http://files.natanson-art.com/uploads/1/3/1/4/131483214/xiziwibuponutu.pdfIn PDF document text
    • http://files.foodandmoodhealing.com/uploads/1/3/1/4/131437980/xanir_makogevofog_tobonofixo_tajipojugoxito.pdfIn PDF document text
    • http://files.deeperwaterscounseling.org/uploads/1/3/1/8/131871864/fugojuwu.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/1/0427/7462/6470/files/lonubawejaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2634/files/86954302176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/kijebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2882/4742/files/dokavojoxubozomexafelewak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/joxabevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5743/1196/files/english_vocabulary_words_with_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/set_homepage_in_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/28046195002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8311/files/zijunikaroguka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/1988/2911/files/3839877334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/anatomia_del_aparato_reproductor_femenino.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_off00006e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5A 5328 bytes
SHA-256: baab185a64a127490d1afc1a78abbeea9e8ab8f15cf1f0683a6e6c60a9caf24d
font_01_sfnt_off00008069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8069 10384 bytes
SHA-256: a2cc332ed5141984e59b4c7341b222c10c0b8217693117571f32bb4ec0294d46

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