Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f3ee8a2eb64a67…

MALICIOUS

PDF

81.9 KB Created: 2021-04-03 07:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e73c7aca6264ebc1cd815d18a24a6817 SHA-1: f842987967a8a001a6f10754e2ea3004fd2ed5c2 SHA-256: d0f3ee8a2eb64a675c277b4b2841e57ab77db87159cd8500476378e11bf673fd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The document body, though heavily obfuscated, suggests a lure related to 'triangular trade slavery webquest answers'. The presence of a large number of external links, combined with the ClamAV detection and ML classifier flagging, indicates a malicious intent, likely for SEO spam or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 5

  • 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.
  • 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://leonvi.ru/wix?keyword=triangular+trade+%252B+slavery+webquest+answers PDF link annotation
    • https://pazijovipa.weebly.com/uploads/1/3/4/3/134327002/419591.pdfIn PDF document text
    • https://lirukasuk.weebly.com/uploads/1/3/0/7/130739032/1d3937667dbea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369522/normal_5fced5e68d488.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/hbJanyT/fapuduneletelirogase.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_5ff783a4c03f7.pdfIn PDF document text
    • https://bepikirutufuw.weebly.com/uploads/1/3/4/8/134866592/wikafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479470/normal_60555ac2913ac.pdfIn PDF document text
    • https://nabebumiz.weebly.com/uploads/1/3/1/4/131452902/lowikofikaxofag.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/aieijje/beast_quest_switch_trailer.pdfIn PDF document text
    • https://napifilimikap.weebly.com/uploads/1/3/1/6/131606974/surotujinomibuzej.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/hfibtjh/88945901836.pdfIn PDF document text
    • https://bisigategisabuv.weebly.com/uploads/1/3/4/8/134884720/ec0a33a0a.pdfIn PDF document text
    • https://xubejuvanexog.weebly.com/uploads/1/3/5/3/135311054/pubisa.pdfIn PDF document text
    • https://molukubiluvu.weebly.com/uploads/1/3/1/4/131453067/wokawadif-sorujuxobed-feruze-rojige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fcf18c2ee93b.pdfIn PDF document text
    • https://bamegipizof.weebly.com/uploads/1/3/4/6/134647446/kudinurefatoriromafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491169/normal_60029f5be9f15.pdfIn PDF document text
    • https://jenamojid.weebly.com/uploads/1/3/1/0/131070605/3381376.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fovezewi/fort_pierce_florida_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/dell_studio_desktop_slim_540s_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/fuxanizerixarurobidezux.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/belegigoz.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/denufilofikaposufimoguda.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/64042543857.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/48181104561.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/wokaniwofatuzaf.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/sam_patch_the_famous_jumper_summary_sparknotes.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
    • 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_off0000ebba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBA 5460 bytes
SHA-256: dd4bb492538b2c5bbf41ac01981b66ec227b2daa056010d73a17a0d963aa41ac
font_01_sfnt_off0000fe67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE67 10852 bytes
SHA-256: 18b41921a6461c527a768e2ba39723916098361c6e4eb9f2d7249f83f43b49fb
font_02_sfnt_off000123cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123CF 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd