Malicious PDF — malware analysis report

Static analysis result for SHA-256 9567f4f005e2d7c9…

MALICIOUS

PDF

37.7 KB Created: 2020-08-12 00:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dca15aa4ac1554452bb11c39119ca69f SHA-1: 387310b61dbc194e85fb7a063d71fd1a34dae004 SHA-256: 9567f4f005e2d7c90941d064ec830bd49835fe593ff6619755e4f3fce8b7ace9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to improve search engine rankings, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to download further malicious content. The ML classifier strongly indicated maliciousness.

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=cambridge+english+first+for+schools+practice+tests+pdf In PDF document text
    • http://files.area51scooterclub.com/uploads/1/3/0/7/130740458/japezarurizojadonozu.pdfIn PDF document text
    • http://xemikaz.streamatsspp.com/uploads/1/3/1/6/131606260/5526baebce94.pdfIn PDF document text
    • http://files.bydesignholistichealth.com/uploads/1/3/1/4/131483214/pewivomezu.pdfIn PDF document text
    • http://files.aafps.com/uploads/1/3/2/8/132814593/ede3183.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/1/0428/8649/6415/files/michelin_wiper_blades_size_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/tujivap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/pipijuxoseror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sekokejeninidifowabofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4919/7472/files/adbwinapi_dll_is_missing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/mexilawumovorozoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/vukivizev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/wordly_wise_3000_book_7_test_booklet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/modad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/comparison_of_adjectives_exercises_advanced_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/39919149495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/wotesojofuvezekub.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 7

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_off0000543d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543D 5612 bytes
SHA-256: 729121e93647985f2902b2652a17571627586ba229d0ba140179f640115edd97
font_01_sfnt_off00006721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 10052 bytes
SHA-256: 56fa853bf19bc9fea8fe4d0a9e83b519c476d34cea5ddcd7b164a0177dc26694

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