Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c235ec23fb41b97…

MALICIOUS

PDF

84.9 KB Created: 2020-08-09 04:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f8d09a6158c3dc1ccbbe58df43685fa SHA-1: abbf81078f994e3a4bb1947ad6a6107be3c8b824 SHA-256: 5c235ec23fb41b9712752cdde02b43bfd1f6e6529a32ac0a23af0b37ffbe7404
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate documents, but they redirect to a malicious infrastructure. The primary redirector URL is identified as malicious, and the document body, though heavily obfuscated, contains a reference to this same URL, suggesting an intent to drive traffic to malicious content. The ML classifier strongly indicates maliciousness.

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=atherosclerosis+treatment+pdf In PDF document text
    • http://files.ashdownsafety.co.uk/uploads/1/3/1/3/131383743/9711047.pdfIn PDF document text
    • http://files.scottontherocks.com/uploads/1/3/0/8/130873804/407497.pdfIn PDF document text
    • http://files.burlingamefootball.net/uploads/1/3/2/7/132740743/lipisemiris.pdfIn PDF document text
    • http://files.swiptt.com/uploads/1/3/2/7/132740337/rezugil.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/1/0427/6482/8838/files/75735336105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/rodexubugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4896/0151/files/88126673034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/31783965769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/danisafamujadodigosapoxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8581/4177/files/24319429010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/ferew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/track_phone_number_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2907/5880/files/star_trek_the_motion_picture_watch_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/92734667707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/56419322832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/wurolujigubironug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/momagunadiradux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/lubujuwi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001107a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1107A 5384 bytes
SHA-256: a46f38b2ba73e8282f35e7c0d7021f97afb262c65882df5e053228d5de7a8e06
font_01_sfnt_off000122a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A0 10456 bytes
SHA-256: 648f0e3866242df69734df97b1d36ed297f319e1c2ef4aedcf892f8dfb3eac0c

Open this report in the interactive analyzer, or submit your own file for analysis.