Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f27b0b5239ae678…

MALICIOUS

PDF

55.7 KB Created: 2020-08-11 02:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcfa5b34e055983d2f677673bbb0bbdb SHA-1: 11cc86add6c08f84434090a1c2511861d2f80537 SHA-256: 0f27b0b5239ae678232e210417ffbbb03ece8cf9a6baf4552d98eb1d6e808fed
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically designed to lure users via SEO tactics. The primary malicious URL, 'https://ttraff.ru/pify?keyword=detailed+lesson+plan+in+filipino+grade+2+pdf', is embedded in the document body and linked via heuristics. The document body itself contains obfuscated text and the malicious URL, suggesting an attempt to disguise its true purpose as a lesson plan. The ML classifier strongly supports the malicious verdict.

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=detailed+lesson+plan+in+filipino+grade+2+pdf In PDF document text
    • http://files.rollthai.com/uploads/1/3/0/7/130740221/gizeg_fedibig_vefixi.pdfIn PDF document text
    • http://files.welldressedmamma.com/uploads/1/3/2/7/132740214/4370d329b9e0e.pdfIn PDF document text
    • http://files.talltalesuf.com/uploads/1/3/1/4/131406826/bunotebosizoz-parewamep.pdfIn PDF document text
    • http://files.elizabethweybright.com/uploads/1/3/1/3/131380558/2669625.pdfIn PDF document text
    • http://files.woodwindfox.com/uploads/1/3/1/6/131606636/2087864.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/1/0431/0623/8613/files/27841879796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/catholic_bible_timeline_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/aristofanes_lisistrata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botudurodakokebavexosox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/13875450028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0946/files/66188518516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4228/1371/files/duvunuteriwoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/77045110341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0105/2310/files/22698884378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/bakojusuvufapomovow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FF 5128 bytes
SHA-256: ca95c4033ca4988d640d91c24fb1c3fd5272b1d0c2f4dbb40444e664032a548e
font_01_sfnt_off0000937f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x937F 15568 bytes
SHA-256: ffa154ecc310e41e2e2b817d475419ecd3dbc0f12410e8dc67e44f62ebc64ab7
font_02_sfnt_off0000c349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC349 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.