Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb70b1a025ae27a0…

MALICIOUS

PDF

121.0 KB Created: 2020-08-03 12:08:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a79f45df8b34ab4c5f07902a5b5b2e68 SHA-1: 18eb004ea0c59fd9160ac1dbb7dc7b0330ecabd1 SHA-256: cb70b1a025ae27a04fcd616f9f4645022ef3d01f0cdfbcadc1f91bf382430344
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=abordagens+de+ensino+mizukami+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated, but the malicious redirector is a clear indicator of malicious intent.

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/pify?keyword=abordagens+de+ensino+mizukami+pdf In PDF document text
    • http://files.huntermarshallconsulting.com/uploads/1/3/2/6/132682681/d5a69c7eed0.pdfIn PDF document text
    • http://files.theekklesiacenter.com/uploads/1/3/0/7/130775282/5d54107.pdfIn PDF document text
    • http://files.parkingguidance.com.au/uploads/1/3/1/4/131453682/laxanuwimesawok.pdfIn PDF document text
    • http://files.easyairrentals.com/uploads/1/3/2/7/132740623/lawid_sasigeledo.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/1/0433/8316/0995/files/risedotasasolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/60052364391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/focus_t25_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/66756234064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/xivexepidirevon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/diselufuwiwalerid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/biredorifamubelib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/xibizijutimik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/39787627654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/89152211266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/tupovire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.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 5

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_off0001983e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1983E 5572 bytes
SHA-256: 02b67eee909ad08d7ffc4469499a3f5f3c66f0cfd34bf6c7edb62816cb47b55b
font_01_sfnt_off0001ab23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB23 14264 bytes
SHA-256: d3796348d0769b46c663c8d27cd36b73e01ca8682e1d9000b58939c5ca84b4a2

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