Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b25928e52ae172…

MALICIOUS

PDF

38.8 KB Created: 2020-08-24 00:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f062da49e0840ccf22e91427dcae0628 SHA-1: 52c83fb70e2bd97361471a8f22081d4ffc185af3 SHA-256: 75b25928e52ae1729b6794586f15540a5c77ecec4f4ae2baf014913a5d19fa72
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'interim report meaning' and includes the malicious URL, suggesting a phishing or content-luring tactic. The presence of a large number of external links, including to potentially malicious redirectors, indicates an attempt to drive traffic to external sites, likely for malicious purposes.

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/pify?keyword=interim+report+meaning In PDF document text
    • http://pebofador.premiertags.uk/uploads/1/3/1/4/131453109/xuzupisoxaba_jepog_xusezakija.pdfIn PDF document text
    • http://bakilulu.christmasinchilhowie.com/uploads/1/3/1/8/131856185/33710da41.pdfIn PDF document text
    • http://rupes.bilianavoutchkova.net/uploads/1/3/2/7/132712348/vuvinokazixixore.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/1/0432/7941/7504/files/dibis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/kemidizeloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/39366098387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1460/0342/files/perobaderifebopamufuniwug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/zojatirew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2060/5850/files/caballo_de_troya_6_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/exampro_4-_1_cell_biology_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/49223425175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/kotor_2_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/meraki_vpn_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/32440753397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4349/4815/files/sudozugenemabodisovolisav.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 3

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_off00005c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8C 4864 bytes
SHA-256: cbba7121ea76663343dd8a9f964533c3c76fdff6b4bd913d53091fac82417103
font_01_sfnt_off00006cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFC 9852 bytes
SHA-256: 4e0322fedf1d0b270aa6e1e0bf1031d58f096e92b68c92b9b056b4eded7f7568

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