Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f977e2fb92a6c8e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-11 05:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c22d52ea5ce601c9ace5b02ee78f6d5 SHA-1: 3c57fc1986085d277d7796951a859f56fca3d2e8 SHA-256: 8f977e2fb92a6c8e0b06c3e07badace3e8df7d646083bc7c665ba5ff616bc82f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=pdf+ausf%25C3%25BCllen+und+unterschreiben+android'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though partially garbled, contains text suggesting it's a form to be filled and signed, aligning with a phishing or scam lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=pdf+ausf%25C3%25BCllen+und+unterschreiben+android In PDF document text
    • http://files.infoodandfuel.org/uploads/1/3/1/1/131163559/vomuf.pdfIn PDF document text
    • http://files.mcccil.org/uploads/1/3/0/7/130740069/46670.pdfIn PDF document text
    • http://files.support.famhealth.com/uploads/1/3/1/4/131437740/3357936.pdfIn PDF document text
    • http://files.fengshuidiscovery.com/uploads/1/3/1/3/131398099/1e464246.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/1/0435/4031/6319/files/36411195290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1125/files/41898416036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/xebudopesabenusukubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2156/5078/files/latex_hide_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6563/7019/files/vanazufedana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7568/1947/files/applied_research_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/49889950856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/pujenerenekibifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/class_11_chemistry_state_board_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/xibuzagiteguwuno.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_off00006259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6259 5372 bytes
SHA-256: 632d723a1210d8d0e0e4420b7b5d7d026d05de8ef343a1cc16f43deca02f4e2f
font_01_sfnt_off0000744e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744E 10720 bytes
SHA-256: d174f194b201fa85b0fdd585442b63fa0dfcbc8b7f9e8473fc7a569d9822619d

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