Malicious PDF — malware analysis report

Static analysis result for SHA-256 439f09b481e50012…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 09:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7521b8e73949f4fe7abb19b3de948841 SHA-1: e149a37786aeb3e9b6fc42ca2fd3144bd8963a44 SHA-256: 439f09b481e50012f7cc13dc316b39a31b97397faae9c8b09e6b180eb6fa342c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF SEO link farm. One of these links, 'https://ttraff.cc/pify?keyword=autogenic+relaxation+script+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure.

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.cc/pify?keyword=autogenic+relaxation+script+pdf In PDF document text
    • http://files.koutoubiabeauty.com/uploads/1/3/1/8/131857626/393203.pdfIn PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdfIn PDF document text
    • http://files.blackbullfrosterley.com/uploads/1/3/2/8/132816066/jogurimesekegun.pdfIn PDF document text
    • http://sofir.eldoradopk8counseling.org/uploads/1/3/1/4/131438344/bukoxipevabu.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/1/0440/5487/2214/files/zidufugasotalamelokigon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/application_of_computer_animation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/dobiruradedibenakejan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/wogeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/lo_unico_que_quiero_es_adorarte_letra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/gonobovojapemelawusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/la_cantatrice_chauve_ionesco_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/3446051306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/darexoxerolen.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 5380 bytes
SHA-256: 82f54866dfcedd9dd87453972e47c5b229072fbf52934c4bb7b08538f55e45ee
font_01_sfnt_off00007708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7708 11056 bytes
SHA-256: 07db37529bd90305bf2b003f8266a4ffcacef1a73cd6b09d51f895093b8106fd

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