Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fec0a43587b0416…

MALICIOUS

PDF

38.9 KB Created: 2020-08-21 23:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71cda3685f114ea1fd3c57e44d8d2275 SHA-1: fb27bcdc22865683e56fd75a1b2acdef645c3f8c SHA-256: 2fec0a43587b0416f5e2f9765a5f8030053062e5ed63debc248711e9fe31db50
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector and others forming a link farm. The document body, though heavily obfuscated, contains references to a 'scientific method hypothesis worksheet' and the URL 'https://ttraff.ru/pify?keyword=scientific+method+hypothesis+worksheet', suggesting a lure to a potentially malicious site. The presence of numerous links, including the identified malicious redirector, indicates an attempt to lead the user to harmful content.

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=scientific+method+hypothesis+worksheet In PDF document text
    • http://pegegufer.collegesite.com/uploads/1/3/1/4/131406821/mafutuwot-xuvonepek-witiv-denomanogopeso.pdfIn PDF document text
    • http://nowutizu.berksonrealty.com/uploads/1/3/0/7/130776886/kojabite.pdfIn PDF document text
    • http://fipibixi.photographybyroque.com/uploads/1/3/0/7/130739220/deditite-fabaratuf.pdfIn PDF document text
    • http://nomob.theroyalposts.com/uploads/1/3/1/4/131407818/feginuzalaguzexime.pdfIn PDF document text
    • http://files.abqcanvasandcoffee.com/uploads/1/3/1/0/131070841/telewox-tuzug-vared.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/1/0431/5847/0822/files/baazigar_odia_film_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0124/0992/files/95936832287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8332/3806/files/tchaikovsky_swan_lake_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/midogebimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/vegukekiposapuvofir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3218030698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/49872592200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/48895521135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/28105693440.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 2

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_off00005aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 5512 bytes
SHA-256: b9404cc7bfd8f26d2cb46c925ec04b437b36b83c3dd2cc8e2d81dbb4fa721de4
font_01_sfnt_off00006d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4B 9748 bytes
SHA-256: 86926da2c86207195f2060b066c5d6897c278af70160ae3cf99852b00e1b4c78

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