Malicious PDF — malware analysis report

Static analysis result for SHA-256 2380a257d029a272…

MALICIOUS

PDF

78.6 KB Created: 2021-03-09 17:34:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 025f28af523c0bffd8ef44bdf544d71f SHA-1: e6a4580fb524833d4d547746c921a4e50904f38e SHA-256: 2380a257d029a27223c1a3306de433e6883edf6c46e474cb6b6a8ee77302eaf2
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing campaign. The embedded URL 'https://xezojetit.ru/strik?utm_term=la+gallina+degollada+los+personajes+principales+y+secundarios' is particularly suspicious and likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=la+gallina+degollada+los+personajes+principales+y+secundarios PDF link annotation
    • https://cdn.sqhk.co/girolivudafo/chbehaI/1813144449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484107/normal_603baeb1d0214.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/jigipm6/codashop_free_fire_redeem_code.pdfIn PDF document text
    • http://connexion-amelii.xyz/59996419668pn8bc.pdfIn PDF document text
    • http://henrysavbr.site/osha_forklift_training_online_freeofi3b.pdfIn PDF document text
    • http://itfamily.info/jezokugetowuvolusu6ibw.pdfIn PDF document text
    • http://totalcreditreport.info/josonasuxelivixudedi91w13.pdfIn PDF document text
    • https://dotomogef.weebly.com/uploads/1/3/4/7/134760479/ec215e9a9c95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501656/normal_600a0415bff54.pdfIn PDF document text
    • https://denimuka.weebly.com/uploads/1/3/4/5/134582609/6090396.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/jPKggij/drifters_burgers_nutrition.pdfIn PDF document text
    • http://halfraire.xyz/nudupejedix0168.pdfIn PDF document text
    • https://felonuwonab.weebly.com/uploads/1/3/0/8/130814100/4069437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_6015d86c0f635.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/zgcHmgd/zavavojesuzikobujutam.pdfIn PDF document text
    • https://cdn.sqhk.co/gimiraxu/AZUUgdO/pro_bowling_player_salary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_881cb36443484d5abc7d950b4940778d.pdf?index=trueIn PDF document text
    • https://1fae3a98-13b7-4b95-b1f0-1fbd1b7b0aee.filesusr.com/ugd/1da05d_bd76d4b5b9a44714af242133210c1756.pdf?index=trueIn PDF document text
    • https://4993f9ff-345c-4c03-a8ec-d4f8dac664d6.filesusr.com/ugd/debbe1_af6dbce2c5834edb972b353a6c135538.pdf?index=trueIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_51c01e59c8b74fbebb24def36ab43975.pdf?index=trueIn PDF document text
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_1c938fbc1643492fa355f19b4868910a.pdf?index=trueIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_c1d9db3e6805432b868e3504bfca6114.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF325 5360 bytes
SHA-256: 9bfe7878a49fec602b2210de8c2a149adf6f0551bd5cb98546d9f5b3aca28b07
font_01_sfnt_off00010581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10581 11388 bytes
SHA-256: ae0b9a32d64ea284c21343e204aa1108eaa10eb0d2eee2f0da1ff27dac78c742