Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1ff65f4c8626f2…

MALICIOUS

PDF

62.3 KB Created: 2020-07-27 03:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3423261ec878a9f3ce115497cc561b7 SHA-1: 3bf3d18f19b6b561a74b0a0bac3f1a480f0d0390 SHA-256: 2a1ff65f4c8626f2f9da8ec29fca344149b5bdb1d9d65db0d3443728512c3b97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm hosted on Shopify, suggesting an attempt to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a likely phishing or malware distribution attempt.

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=english+birthday+song++mr+jatt In PDF document text
    • http://files.thestoryexploratory.com/uploads/1/3/1/6/131637640/c52f4.pdfIn PDF document text
    • http://files.meridianphysio.com/uploads/1/3/1/3/131379246/901782.pdfIn PDF document text
    • http://files.leonorigroup.com/uploads/1/3/0/8/130813317/kudetuv_newuvudo_dozonu.pdfIn PDF document text
    • http://files.dibbacityguide.com/uploads/1/3/1/6/131606674/jiziwagukizob.pdfIn PDF document text
    • http://files.upsydaisydesignstx.com/uploads/1/3/1/3/131380063/wusavudu-dikij.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/1/0429/2981/5711/files/96175579670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/81496608840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/30446032260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/12932679971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/52975337394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13503036424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1466/5878/files/sikerekozinamavoves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/58853156977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/43004460085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/getovogowosepulakijibena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/lajupivosawefodoxalasusa.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_off0000b317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB317 5184 bytes
SHA-256: f052d2779d0044a117673a62ffbf156b79b054ed583f1f6129f83e0d02fc6085
font_01_sfnt_off0000c486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC486 11440 bytes
SHA-256: 5128384383572fb0a9efbeaf7574b19c324fda04c6197e7fb73be8c61b31a80a

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