Malicious PDF — malware analysis report

Static analysis result for SHA-256 8492ea5b81d81368…

MALICIOUS

PDF

47.1 KB Created: 2020-08-23 10:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a614f4b61ecf0dced68a861a6a5d841 SHA-1: e57ebdb286a2be74b30b413b1add0698bc52b6f6 SHA-256: 8492ea5b81d813682d3154ca0e26b1a685e381ea1b5058291843a198c1677e7b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, identified as a "free-download phishing" lure. The document body, though heavily obfuscated, contains text that appears to be a lure for "Claymore anime episode guide" and includes the malicious redirector URL. The presence of multiple PDF links and a redirector suggests an attempt to lead the user to malicious content, likely for credential harvesting or further malware delivery.

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=claymore+anime+episode+guide In PDF document text
    • http://pijizoj.anthonymichaelscatering.com/uploads/1/3/1/4/131453574/5365013.pdfIn PDF document text
    • http://files.newcomers-winstonsalem.com/uploads/1/3/1/4/131438392/3970147.pdfIn PDF document text
    • http://files.thejourneywithinus.com/uploads/1/3/1/4/131453132/9a7963423aa91a.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/1/0428/9835/8432/files/72710717911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/convert_to_monochrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/78633288793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7092/2655/files/menire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5124/files/mufimagelepisowafagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/nadi_astrology_books_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8447/9641/files/potential_evapotranspiration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9885/5840/files/letter_from_santa_template_printable_uk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC3 4368 bytes
SHA-256: 9cc1f8a90bd7946c01db2f75b6c22763e64eb07a80d9d934a9e376daa7adb1d4
font_01_sfnt_off00007b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B14 5288 bytes
SHA-256: 1afd03c2752dbd1053cc4adc90319968f19f4e1d44f2d46a4b7df6aa2ec79611
font_02_sfnt_off00008cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFD 10076 bytes
SHA-256: 2abe44b5345c751bbc47f8a814ddafb2f2eb6b3e6c7ccc8219fd16ccd9206725

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