Malicious PDF — malware analysis report

Static analysis result for SHA-256 242fa8275bfd587e…

MALICIOUS

PDF

113.7 KB Created: 2021-04-03 14:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49a10190aab96d5464261fef71a1f162 SHA-1: e707d57158930cbccefc9be94037f29ef17a1fd3 SHA-256: 242fa8275bfd587e22ee36fe507bdc604c223f57a1cf263537858b4fd4b1df5b
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, indicating a link farm or SEO manipulation tactic. The primary malicious URL identified is resalured.ru, which is likely used to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/123?utm_term=rudram+chamakam+in+kannada+pdf PDF link annotation
    • https://nukanepinax.weebly.com/uploads/1/3/1/4/131454046/zazufurox.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/2203635.pdfIn PDF document text
    • http://trysoda.pro/tarelula6lfa7.pdfIn PDF document text
    • http://antonioit.space/very_sad_life_quotes_images_free_downloadkxuy4.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/06d03241-9174-467d-ae16-184096149cbc/bissell_proheat_power_steamer_manual.pdfIn PDF document text
    • https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_758aeb37d2be4d9b89b94c243a492144.pdf?index=trueIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_6de0955ee59745ebad6f83e79b6530b3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/60bae5c7-d773-422d-b8d4-5ff82394f2d9/nme_500_greatest_songs_of_all_time_500-401.pdfIn PDF document text
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_cc6b426348b349338ad440e7ed235493.pdf?index=trueIn PDF document text
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_631556b3ef0b472d85de4b22dfc72641.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/014cc1f9-dfbf-4d1a-8933-a46d637ed815/xexibexokemo.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_3ec5d78c2d87415db84ab0222a572890.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/68492e54-5a7f-47eb-b0be-4e2c1279541b/how_much_do_security_engineers_make.pdfIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_bbac4b0b5a204a3880fe6131e19d77ba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a900c2a-d91f-440f-9d14-e48ba4726807/vativezonijumujorak.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_c7bcd49230934bedbddafd4470af2bec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e8d7e8e-abdd-4b57-83bb-975020394269/how_to_write_a_screenplay_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea2ee54-366d-412b-bac5-a97b9c5a187c/80373861950.pdfIn PDF document text
    • https://f856bbc4-01c8-45e4-8891-a53c5ee59fd0.filesusr.com/ugd/8e827e_8c2fa1f8a87d4bb0ba5c5e372e1af251.pdf?index=trueIn 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00014884.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14884 46052 bytes
SHA-256: 4f115886b48ed4f4373e8829811cd91b2e0d7fdd91885c6d211770f3fd429a65
font_00_sfnt_off00012d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D55 5256 bytes
SHA-256: e5475b716867b3f33c7a1772fc19ea775de07be0b2f9c0168292d214592c9e18
font_01_sfnt_off00013f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F12 2140 bytes
SHA-256: f46e6372de50a2cbde1f8bdabbbab189751cb3bd88e87a1552b81ba7dbba52c8
font_03_sfnt_off0001946e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1946E 9936 bytes
SHA-256: 7fb5638bd44cdf844f4e14f6d0ce01b61b9d9959c08c1e621b401bdac7bf1dd1