Malicious PDF — malware analysis report

Static analysis result for SHA-256 45807cb6b56ab90f…

MALICIOUS

PDF

47.6 KB Created: 2020-08-17 07:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3081beed6749194a1afe2b199505a6c SHA-1: b6593ab3823a85f3e661588d9b446c88e7aa1e26 SHA-256: 45807cb6b56ab90f9b5fe29949b3576d16f2c0676157c2e7aebe67866dbfa626
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to a scholarship form and the malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=hbse+10th+scholarship+form+2019, which is likely used to redirect the user to a further malicious destination.

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=hbse+10th+scholarship+form+2019 In PDF document text
    • http://dixoxax.whitefishtherapy.com/uploads/1/3/1/4/131406361/pizopezasovovek_waxetarujaf_tutuzukasimur.pdfIn PDF document text
    • http://zujufu.poetryjockeys.nl/uploads/1/3/1/3/131380213/c286bba9.pdfIn PDF document text
    • http://files.andreavytlacilova.com/uploads/1/3/0/7/130738918/fubosager.pdfIn PDF document text
    • http://files.markdalebaptist.org/uploads/1/3/1/0/131070051/2384278fc0ae991.pdfIn PDF document text
    • http://files.andersonvocal.com/uploads/1/3/0/7/130775025/8056626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/arrow_learning_by_doing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/kavuzogikudelawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/arcanum_unbounded_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/31750725286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2729/8461/files/memorandum_of_agreement_sample_business_partnership_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/felogofukigemamavefafilem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/fekawujeremuzab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7358/4793/files/gibetuzuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/99091730948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0742/2109/files/85099450774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1569/1678/files/98428293377.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 5840 bytes
SHA-256: 816a860383f6316e5ca19ff6b902155d85043492cd52f73ef7694eec0736f10b
font_01_sfnt_off00007934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7934 10416 bytes
SHA-256: fdbf01aab72766b8f256134ae4a59f6885e2267b0553872fc1b2ac5755517bb3
font_02_sfnt_off00009d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D1F 5616 bytes
SHA-256: 45f84c337a35e699ab4b94f3b68433b44fbb022d067ef0fe436fd66856700698

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