Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ac8a9626c73504…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 03:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34cb0a7e1e4d1ef1cd7b4ff264552972 SHA-1: 406d683942e9f456171b39ad1831a5e3a646b845 SHA-256: f3ac8a9626c73504fdf9d5ef7c236139137a108cc60e6c43eaf6ede2d9344363
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Code vein builds guide' and the malicious URL. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content. The presence of many Shopify links, some of which are benign, likely serves to obscure the malicious link within a larger link farm.

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.ru/pify?keyword=code+vein+builds+guide In PDF document text
    • http://lemimaxid.rubypurplecreations.com/uploads/1/3/2/7/132712416/7de6ac630527b.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/1/0435/2330/9727/files/91938821565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/lobixekolinijerog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0210/8836/files/adoramus_te_domine_taize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9130/4343/files/stolen_booty_wow_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3880/1061/files/canape_vector_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/40165652968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/54594221464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/exin_agile_scrum_foundation_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/sourcetree_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6372/8545/files/fci_assistant_grade_3_advertisement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2206/5557/files/rewurenemiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/sojugenije.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 1

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_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 4792 bytes
SHA-256: 4ae1e66bb2a011efcc1385d98101a1d417553d31dc360d803d21abf31fce0d15
font_01_sfnt_off00008196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8196 10468 bytes
SHA-256: 51ffeff96a516cd08e81a4cd2815dd5dd98000df1347f8295bd4531b90f8206d

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