Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0488c9d52af1cc…

MALICIOUS

PDF

43.8 KB Created: 2020-08-07 22:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7543742194c3a89689442cf833fb4d5 SHA-1: 434985692c204e0ed560a69755ef869b4737fdc6 SHA-256: 2a0488c9d52af1ccaacc316b5b258b7d8c8f37bc603e3becd287643de665548a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the same malicious URL and references 'ejercicios futuro perfecto simple pdf', suggesting a lure to disguise malicious intent. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms the attack pattern.

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/wb?keyword=ejercicios%20futuro%20perfecto%20simple%20pdf In PDF document text
    • http://files.lejolijardin.com/uploads/1/3/1/1/131164122/186172.pdfIn PDF document text
    • http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.pdfIn PDF document text
    • http://files.crueltyfreecuisine.com/uploads/1/3/1/4/131454270/b292d9f3d25b01.pdfIn PDF document text
    • http://files.northcoastoutfitters.com/uploads/1/3/0/8/130874058/8006452.pdfIn PDF document text
    • http://zipile.idronephotography.com/uploads/1/3/1/4/131453177/gubesoko.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/1/0427/6705/7063/files/dadugawuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/39102284915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/susupovezukam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/16677175503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/accountant_duties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/separation_agreement_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/cognitive_behavioural_therapy_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/76487490741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/dnd_races_all.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285In 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_off00006be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE3 5124 bytes
SHA-256: c71074be01639e4ba763d30d7a1c0d5c4c146ec13937c6eb470a260261561696
font_01_sfnt_off00007d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D47 11156 bytes
SHA-256: bb2bc30f579882e611829f3a1048a51055e80b8ecc3ab6c98af25d7ec8db3f3e

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