Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1201082a6c15a99…

MALICIOUS

PDF

84.0 KB Created: 2021-03-30 15:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70000a1020349cb3ccfe32e337e12a15 SHA-1: 758b37072dd9ea9948674e0b28a9dd1cc9eee848 SHA-256: a1201082a6c15a99f0d60400828c62528c5f4a3b96dcbbd63bf563343d1360d4
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 domains, suggesting an SEO spam or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=sorry+for+inconvenience+in+spanish PDF link annotation
    • https://s3.amazonaws.com/vizegemawokaxe/cloud_atlas_ending_explained.pdfIn PDF document text
    • https://javemutamutog.weebly.com/uploads/1/3/4/6/134638327/4e1e5dcd445.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/leapfrog_my_own_leaptop.pdfIn PDF document text
    • http://onsideball.info/95656245609sh8j7.pdfIn PDF document text
    • http://all-gopro.com/american_buffalo_broadway_openingzow7h.pdfIn PDF document text
    • http://cookwellbakewell.com/muwogunofilagijem1u7yj.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/causes_of_the_civil_war_video_worksheet.pdfIn PDF document text
    • http://kieverts.xyz/5075105026af5fv.pdfIn PDF document text
    • http://cmb-accueil.com/tm_ac1900_merlin2eayu.pdfIn PDF document text
    • http://keksik24.ru/handbell_sheet_music2ynx6.pdfIn PDF document text
    • http://bu-markett.com/repiniropodeaitse.pdfIn PDF document text
    • https://josusijino.weebly.com/uploads/1/3/0/7/130739082/fazutoro-tofon-sonaguse.pdfIn PDF document text
    • https://saxisonowe.weebly.com/uploads/1/3/4/5/134508075/3031908.pdfIn PDF document text
    • https://kolekidir.weebly.com/uploads/1/3/4/4/134441437/lebexidijozikimosodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_f6bede87ebc5424f9e9ceae107defe14.pdf?index=trueIn PDF document text
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_1627b9f81bc244ba9e19d9cd0fb62c7f.pdf?index=trueIn PDF document text
    • https://ff743420-c5e2-4527-a456-70ddb2a1abd8.filesusr.com/ugd/5178f2_dbee0df241794258bdad5edbefb036a4.pdf?index=trueIn PDF document text
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_2269200bb8fb4d4ab6726f0fbe5f76aa.pdf?index=trueIn PDF document text
    • https://8acf0fc4-2da8-4686-9788-d7840b5449fc.filesusr.com/ugd/fab691_58b895a413ea456b9e6016905a709663.pdf?index=trueIn PDF document text
    • https://f3b8d348-8566-49c9-a9f8-a2c3b9e1bc8e.filesusr.com/ugd/f1c748_5010d282f24545b381c4dc9cc7446ac0.pdf?index=trueIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_286682b3b87a4d2f87ae13ebac3543f5.pdf?index=trueIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_e55a6096764b4605b5c5f55968f1b8ca.pdf?index=trueIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_0ac96d14c8d3434088d722d9a1bcef0d.pdf?index=trueIn PDF document text
    • https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_0cdc61cf70154a84873af5d4d3066dc9.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E5 5336 bytes
SHA-256: 4ab6a770e2b2e7a7a9ae20bf9e3236eb1ad80cf93b5b9f410c8638f246330bed
font_01_sfnt_off0001031d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031D 13044 bytes
SHA-256: a6dfacfdcf2e2c6b21ebcc407c152f8ec366f24a413cb90c6bd8e2c906314707
font_02_sfnt_off00012dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC6 16068 bytes
SHA-256: 1f10eee925fbe99070ce930aad2781db9cd53dceef6a88ee5d5c61933f6ad089