Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ef913cddb03481…

MALICIOUS

PDF

53.0 KB Created: 2020-08-10 13:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 798028046813ca75d9c0b02d9694d7b9 SHA-1: 1bd3139c0ed3536037e438de1df17a1a7770cb43 SHA-256: 45ef913cddb03481303f860479d3704f0ec959fac79c8f874b63f2ac82f2fd3f
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=borges+la+busca+de+averroes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site disguised as a document. No scripts were extracted from this sample.

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=borges+la+busca+de+averroes+pdf In PDF document text
    • http://files.pamelasapothecary.org/uploads/1/3/1/6/131637562/betelomowod.pdfIn PDF document text
    • http://girine.tridenthandyman.com/uploads/1/3/1/0/131070420/nenogomoxironu.pdfIn PDF document text
    • http://bugebuzo.sidthesasquatch.com/uploads/1/3/1/6/131636725/056c07f995.pdfIn PDF document text
    • http://files.annamejiacreative.com/uploads/1/3/0/7/130775747/3fa6ba6e2a2edd1.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/1/0441/0490/8952/files/naxozezozatobudewuxonigod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4511/6311/files/52789116078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/40468989199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/puvowutimakoxudemir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6563/9073/files/8054468866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/4251399701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/luwubosefijutanox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/94851929241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/zewezubulisanerexezatad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8440/6181/files/75036495795.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_off00008e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E42 5572 bytes
SHA-256: 83f40d93d2b421c7f23bb240c7d7428645840bad64f4022a30a9da529e3e131d
font_01_sfnt_off0000a14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA14B 11212 bytes
SHA-256: 0b166960b7c4979c82d279ef4081db6bbbb0e93d9104c6b09eed06b8ab7a7cdc

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