Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a5582586dbd051…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 19:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7325f6c976fe0abef4fbfb6929c2910 SHA-1: 671c71526ca433f0fb00c03427b3d84d356fed87 SHA-256: 29a5582586dbd051b8fe54e515e2edc21b39e1fbc09f4903e0ef870cf126c289
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. The presence of numerous embedded URLs, many pointing to Shopify, suggests an attempt to obscure the final malicious destination. The primary attack vector appears to be social engineering via a malicious link within the PDF.

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.com/pify?keyword=kaleidoscope+motion+graphic+after+effects In PDF document text
    • http://files.patotoole.co.uk/uploads/1/3/2/8/132816195/rewapu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/axis_bank_ccrs_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/xivikurozozalapijuwavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2589/0466/files/programming_languages_basic_concepts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/problem_based_learning_in_nursing_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/nemuritojerepuzog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7971/6264/files/dumaxovumaxonewaxifolosol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/9074563978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/can_you_solve_this_30_correct_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0419/8044/files/nexinatifozixipujuruguxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8483/1125/files/buxegafosewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4198/0317/files/endless_alleluia_piano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D09 5324 bytes
SHA-256: 42c45264002a5f9cae5ff4b35a96ad637f0c2db116899608dd7a89151fca0cba
font_01_sfnt_off00006ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF7 9760 bytes
SHA-256: 3571787d15e5c3dc0cb4e7af9a0eaffef7b2443dbbe780c3a562be0275066744
font_02_sfnt_off0000905a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x905A 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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