Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbce92c4d282048…

MALICIOUS

PDF

46.4 KB Created: 2020-08-12 15:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6eef94221449ebffdc135bf3ca4496c SHA-1: a25582798ff6da9692f14026575a314ab21998a2 SHA-256: 2dbce92c4d28204874bfd6a0088dafbcb62a50a4f0f0a1c4a4df69216e88d8c6
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the URL https://ttraff.cc/pify?keyword=pathway+unstable+angina+pectoris+pdf, suggesting a lure to download a malicious file. The ML classifier also strongly flagged this PDF as malicious.

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=pathway+unstable+angina+pectoris+pdf In PDF document text
    • http://zewug.womensbalancehealth.com/uploads/1/3/1/4/131482993/mekuxiwapanetunawe.pdfIn PDF document text
    • http://files.millworksandco.ca/uploads/1/3/1/3/131398008/4467883.pdfIn PDF document text
    • http://files.biglifecc.org/uploads/1/3/1/3/131383791/3538568.pdfIn PDF document text
    • http://files.welcomeneighborpa.com/uploads/1/3/1/4/131437005/dedurubavokinibujok.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/1/0437/1274/1529/files/66555688695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/tucka_king_of_swing_candyland_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/68077345807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5567/6583/files/madetadogipogej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/arena_class_tier_list_hearthstone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/races_dnd_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/tunaber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/84056146836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5189/1358/files/cell_energy_cycle_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/vovuridujarunuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5334/1082/files/antologia_de_cuentos_para_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/regcure_lisence_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/88649756638.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 5

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_off00007663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7663 5752 bytes
SHA-256: e90256b5c935d3bef9522b099d711aa5c77b02eba2e5f6f082b9ee8762dd6add
font_01_sfnt_off00008a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A00 10104 bytes
SHA-256: cede78c6fcf3202e973f79a389426011b7bf6479369583a703d29d7f8d12cc5a

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