Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb2b3a3a6173aab…

MALICIOUS

PDF

44.9 KB Created: 2020-08-15 00:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0b4ecc0d05846ce09f89a03048a4408 SHA-1: db803961e98c5f11d44d43861550b4e74ae093ca SHA-256: deb2b3a3a6173aab837e1088bacc735bc2b0c4e0949b2c77d69be0b1b7bed112
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body and embedded links suggest a lure for downloading a PDF, likely to trick users into visiting the malicious URL. The presence of multiple Shopify URLs, some marked as benign, indicates an attempt to blend malicious links with seemingly legitimate ones.

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/wb?keyword=second%20chance%20robert%20kiyosaki%20pdf%20download In PDF document text
    • http://files.sig10-cleaning-decontamination.net/uploads/1/3/1/6/131606092/xebonitibivawo_kubaxefupat.pdfIn PDF document text
    • http://files.comforttrainer.net/uploads/1/3/2/6/132681002/4312007.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/1/0434/7278/1477/files/functional_hypertrophy_training_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/dorolufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/tomikinax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/ladun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7347/files/briket_arang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4827/5863/files/69926436528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2122/7416/files/wugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/89826106888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/23356594558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/itil_change_management_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/roxaribituzivejesosemedo.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_off00006d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D67 5744 bytes
SHA-256: 5bccf227df3071d56734def808afd498b7161c6ac71b08804e2a520a96f10cb6
font_01_sfnt_off000080f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 11272 bytes
SHA-256: d8683a0da3639fca50de2d8fdef71fd95ba351c78d43062db85c2193387f3f4c

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