Malicious PDF — malware analysis report

Static analysis result for SHA-256 debe670cde7583e6…

MALICIOUS

PDF

40.4 KB Created: 2020-08-21 21:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87b4334c017506b850f44053b27db0e4 SHA-1: b7757a0eeb6bf285fe7557f7c3d761f1fce42e35 SHA-256: debe670cde7583e6c93aa82129f087d5d2671a8992e637814e874352ab356cf8
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'facebook business cover template'. This suggests a social engineering attack aimed at tricking users into clicking malicious links. The primary malicious IOC is the redirector URL.

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=facebook+business+cover+template+psd In PDF document text
    • http://files.rollinakersfarm.com/uploads/1/3/1/3/131383838/c55d73d856af2e.pdfIn PDF document text
    • http://files.buddymasonhoops.com/uploads/1/3/1/4/131453459/4435149.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/1/0431/7940/9568/files/bsc_inorganic_chemistry_practical_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/54823544912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/ir_functional_group_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/tecnologia_con_enfasis_en_informatica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9479/3630/files/27265419202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/autumn_leaves_jazz_standard_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/jelasezexavakobikosedoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5661/7877/files/cash_book_class_11_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/gawesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1289/1297/files/comprehension_exercises_for_class_7_with_answers.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_off000058b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B7 5436 bytes
SHA-256: dfc7a74ffff467fdddcc49a0fcd01f5ae9df868ca895104c0b7f08e8b21893d6
font_01_sfnt_off00006b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1A 13448 bytes
SHA-256: a18f70f734bcf91cc6be565056331a0058a975b592d47b111cbef4c06377ec9a

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