Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb3601e55dbcf48…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 14:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac0a7f82f1501299c464236c23fdccc3 SHA-1: 47e2f8b30352cf39b4e1e988084ec193054968c6 SHA-256: eeb3601e55dbcf4841442207029a96d846757349ac1ca803d55be59a819fcc33
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=business+dictionary+book', suggesting a lure to a malicious site. The presence of a PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing further supports this. The ML classifier also strongly indicated maliciousness.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/pify?keyword=business+dictionary+book In PDF document text
    • http://files.johannes-keller.net/uploads/1/3/1/0/131070651/narigusofemuvuxafudu.pdfIn PDF document text
    • http://jigagozos.cranbrookdistrictteachersassociation.com/uploads/1/3/0/7/130739163/61ba241a3.pdfIn PDF document text
    • http://files.overheadcranesair.com/uploads/1/3/1/8/131871850/a8234cb5.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/1/0428/5038/6079/files/bollywood_latest_songs_website.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/thanksgiving_worksheets_for_5th_graders_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/63044899364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/22849857875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685258811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/50830630724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8583/9003/files/27426799509.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 6

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_off00006417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6417 5256 bytes
SHA-256: 72569213cf23a96b44f9452b7515cc02a99995aa5a96121b19110579a60b508c
font_01_sfnt_off00007603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7603 10088 bytes
SHA-256: 957cc67684d424c631aa33f7620c07441f8c74ceb4d58567a79ff71302d0f55b

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