Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e12f678496266f…

MALICIOUS

PDF

77.7 KB Created: 2021-04-04 13:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9871b05c391f3b07f1cfa8fe05531a40 SHA-1: dc10d68fdad661256d3d5ca52f05e8c6f7b3d635 SHA-256: 46e12f678496266fca367ad9fff625a5f8fa8ab36faa861f7ac000d50535011f
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to 'Ayurvedic treatment for migraine pdf'. No scripts were extracted, but the presence of numerous external URIs points to a phishing or content-luring attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/award?keyword=ayurvedic+treatment+for+migraine+pdf
    • https://golinogejus.weebly.com/uploads/1/3/1/6/131606227/gizojas_filejiziku_bewibixepito_mikapadunu.pdf
    • https://cdn.sqhk.co/fafixefeb/jbk1lUi/challenges_of_agriculture_in_ghana.pdf
    • https://cdn.sqhk.co/zuvaworizon/hKTjjif/gakurop.pdf
    • https://cdn-cms.f-static.net/uploads/4483103/normal_605dc066ed924.pdf
    • https://kuserivexujeza.weebly.com/uploads/1/3/4/3/134331384/fb46f386eca.pdf
    • https://cdn.sqhk.co/busumodofu/Hhi18hc/3d_puzzles_for_sale_near_me.pdf
    • https://static.s123-cdn-static.com/uploads/4445550/normal_5ff14828819fb.pdf
    • https://cdn-cms.f-static.net/uploads/4385021/normal_603d615963e92.pdf
    • https://cdn-cms.f-static.net/uploads/4466689/normal_5fd2252f56aee.pdf
    • https://cdn-cms.f-static.net/uploads/4481155/normal_60176036cd24e.pdf
    • https://zimekepipo.weebly.com/uploads/1/3/5/3/135351260/badeferogadujeg_guxew_wenegaf.pdf
    • https://bovebonidufos.weebly.com/uploads/1/3/1/4/131483372/tibotatebanu_gupesu_xoxilulolipezu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9a1eab6f-da2d-4a41-99bb-18a59f11b130.filesusr.com/ugd/c2b690_dbd6a50cf20b441f9dce1a9f10d6d299.pdf?index=true
    • https://s3.amazonaws.com/luworizesupox/a_dolls_house_act_2_discussion_questions.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/has_no_game_no_life_season_2_been_confirmed.pdf
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_7de34fd2131b47268d404087eeea91e2.pdf?index=true
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_1d010b9cb3a24956885c1acb6788bcc1.pdf?index=true
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_dc5b9d717dec499bb267fd929e9a76a8.pdf?index=true
    • https://s3.amazonaws.com/tarizirefevifab/digemujerewupinuronoraw.pdf
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_cd7c51fb221c484ba52c3cebc1dc90c6.pdf?index=true
    • https://dc5ca969-d333-4582-9879-b719aca70d73.filesusr.com/ugd/760c43_b290060ae9ce40898401d7b6dffb9b3b.pdf?index=true
    • https://medlineplus.gov/migraine.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f227.bin
3d46f2294966a1d84bdaedc6d5287a4382608567b12d7083d923228089e2f25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 5416 bytes
font_01_sfnt_off0001049a.bin
673601b52be4ff422bd1d1121baeda9045718f2e1cda72a1a65c5ed21649f606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1049A 10936 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.