Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05fb9a0f4362a97…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 07:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0324c9d41428a2d582a864b84810f58 SHA-1: 0ce5e1d458686075e399dc3fcb9711dadb747124 SHA-256: b05fb9a0f4362a976bb43a1c3e9da1370e749c5861d2b50849a61c5589a2695a
234 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.cc', indicating a link farm or phishing attempt. The document body, though heavily obfuscated, contains text related to research papers and includes the malicious URL, suggesting a lure to download further content or redirect to a malicious site. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=examples+of+assumptions+in+research+pdf In PDF document text
    • http://dewun.bellasandfellas.us/uploads/1/3/1/4/131407995/nejuzanolejabujaxame.pdfIn PDF document text
    • http://files.worthingtoneducationalfoundation.org/uploads/1/3/1/1/131163932/muputovexexuda.pdfIn PDF document text
    • http://files.emilystillings.com/uploads/1/3/1/8/131871633/puzidekoduxusiselim.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/1/0430/9080/4885/files/gadefokukumoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4230/7239/files/lanthanide_and_actinide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3081/files/fivutemubena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/becoming_a_supple_leopard_epub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5035/9194/files/zuwivavozipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/61961206798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/maplelegends_training_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/rawidijazexejutonevoxijun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/cactus_y_plantas_suculentas_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0189/5322/files/bizatinaxenimotikinedovos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/cedrela_odorata.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 5420 bytes
SHA-256: 973433810595d4c0b728ff83d7171d360c1de3a69f1d3ee15d5cafdca3339df8
font_01_sfnt_off000075a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 9360 bytes
SHA-256: a33896d097b3cca18f6b0d4e5668c727e889f61985d7f7aa3d217284f7909802

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