Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb25875c981cee8…

MALICIOUS

PDF

38.5 KB Created: 2020-08-10 10:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9da76b1c0ce45ad67a10a8082e4dba9f SHA-1: baa2a0b30f59a74c5362cb4959ff2ac4a932e952 SHA-256: 0bb25875c981cee838fa577966756e8ee8ce73ec98ed4378d209b9cbc5ce8e10
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to trick users into downloading a payload or visiting a phishing site. 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=birmingham+train+map+pdf In PDF document text
    • http://jilubuxe.bayridgerescuesquad.com/uploads/1/3/0/7/130775904/tuzep_pazurux.pdfIn PDF document text
    • http://podubed.essentialhealthsantacruz.com/uploads/1/3/0/8/130874038/4353879.pdfIn PDF document text
    • http://files.wrrbc.org/uploads/1/3/1/3/131383478/0ad9e3.pdfIn PDF document text
    • http://files.susansharpesphotography.com/uploads/1/3/2/8/132814996/jeziwunit-pomesajozofidi-vimufizido-mezupel.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/1/0436/4432/1945/files/common_idiomatic_expressions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/cookie_clicker_save_editor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7747/6260/files/pepukaforoduba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/venizolebaveni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/golozefetanuteku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/65660485884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/gamijazitukelokefamovigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/83295521300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sivuduveserekolagaxabulux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/naxuzesifulibutosutalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/minazatemawe.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5F 4856 bytes
SHA-256: 8f0597b94dec96fd6b7e042ed1f66a83cac7a9e5cbb75ac72cc898bc75d97e29
font_01_sfnt_off00005ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA1 10016 bytes
SHA-256: 73634c942dfedec076a0c6ff11bc792a4c58a9d04e5bfad01777de9152151b77
font_02_sfnt_off00007ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71