Malicious PDF — malware analysis report

Static analysis result for SHA-256 0095600c9986c737…

MALICIOUS

PDF

81.1 KB Created: 2021-04-03 19:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: dcfe8ae3ebc770ea1bc08f21693d4043 SHA-1: eebbed52ac402202e687ddebe0938634f69fc61b SHA-256: 0095600c9986c737796233fd7680a3a7611fc6082fc47fb43141637f990ce75c
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the nature of the link farm point towards an attempt to trick users into visiting potentially harmful sites.

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://fokemale.ru/strik?utm_term=kawasaki+ninja+300+service+kit PDF link annotation
    • http://polibesafonujof.iblogger.org/les_amputations_des_membres.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/26409135993.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/gawowelajigodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tinipemalab.rf.gd/pefiliferotuxonolog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e3f18e7-7c98-4af6-be0b-5f22b84a7daa/1994_honda_accord_ex_horsepower.pdfIn PDF document text
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_68376aa60b634b69a63adf93d3dc507e.pdf?index=trueIn PDF document text
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_e7171d25ddb84d78a631d9019db17b86.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cb182b3-6098-4e0b-821c-80acd2687f53/tokumajetanup.pdfIn PDF document text
    • http://bajupigirosinaf.atwebpages.com/7610251698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e58ea0a-ed12-48c3-9f4b-55911d1b1ad3/holmes_mini_tower_air_purifier_amazon.pdfIn PDF document text
    • http://mexaguroduwora.epizy.com/86031657808.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/kubasogedokejawov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d1e4a43-c2ca-4250-8fd3-2a20f8c616a7/rowisisodolo.pdfIn PDF document text
    • http://kofujuluzode.epizy.com/kafebotitonom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5ecc7db-6fca-453a-a4ca-484398b03864/waxomi.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/cadena_de_markov_ejemplos_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8458e79-5d66-4160-9873-558dbb4e4599/92107338747.pdfIn PDF document text
    • https://5ccda086-29c7-4024-8a93-689df1f3b89c.filesusr.com/ugd/ed8107_51ac0786bac04d04ba64ecdc908174ea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa58d9c-d08f-4665-b864-a9e7a5406767/47251504184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c028d27-56e9-4908-a16e-b979cfd5cc64/kinimafuzakolitigadevij.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_7c9ba0e2c50548cc90186398ad2c6796.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbb7aec7-0872-4376-8bf3-1639013a7836/vapuwabiwotedogimolador.pdfIn PDF document text
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_6a038c574b5c4e8482f45e78f6fee57e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea9a5c04-3424-4b71-9757-fb8adb0601b0/the_boy_who_harnessed_the_wind_rotten_tomatoes.pdfIn PDF document text
    • http://welidigukiru.epizy.com/fupanebuvizananukifugi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B1 5004 bytes
SHA-256: de94c977c702f47b0f822c7246884286b682360e35aa395761a6d49ba6f24315
font_01_sfnt_off000104cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104CB 10396 bytes
SHA-256: 8de92236ac4bbc3b80d0b66fd2bab24e5101988e564f39e4b0dfd6577fda52c9
font_02_sfnt_off00012876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12876 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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