Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce0b619629446f2…

MALICIOUS

PDF

134.0 KB Created: 2020-08-06 20:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4eb118121e21c0599a2f65698783d091 SHA-1: 8a35d9bcc3442a60f54e1ee60260252f2d964db3 SHA-256: 1ce0b619629446f205514b14b1991d1f400f193de408cfeb892cc97b7e618368
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a large number of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. This suggests a phishing or malware distribution attempt by luring users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=alter+ego+plus+a2+pdf In PDF document text
    • http://files.inthelaughterlocker.com/uploads/1/3/1/4/131438419/e538e7d0a077940.pdfIn PDF document text
    • http://files.kangarooislandvet.com/uploads/1/3/1/0/131070604/7a562508.pdfIn PDF document text
    • http://files.safe-t-systems.net/uploads/1/3/1/8/131856247/sesaz.pdfIn PDF document text
    • http://files.earlyunitedstatescoins.com/uploads/1/3/0/8/130813639/sijozomukekadi.pdfIn PDF document text
    • http://numizak.sharkbodiesfitness.com/uploads/1/3/1/3/131381204/55c4cd0d350.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/1/0429/6366/5062/files/turnitin_download_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/digadaxojodivuxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/gosefubuzamoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/weight_training_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9347/files/nanejasegodozizelit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/buwazufaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/sufezasijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7647/6311/files/29541447985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/vonadibofutusiwugonamuzam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/bopubewipabibevoju.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8C6 5328 bytes
SHA-256: 4af5c7e6ece2b5e98edc4b57536a5ddd4b21a0a5c369dae009723122e53aedfd
font_01_sfnt_off0001bafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAFE 19424 bytes
SHA-256: 8f356e9783ebe6d8f7ddd12a319ab35ddc060e8894a5633cbf2ffc9402e1244e
font_02_sfnt_off0001f514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F514 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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