Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f366c291cd22d9…

MALICIOUS

PDF

74.7 KB Created: 2021-03-31 08:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e98bfb0c9a1501d2da10af72488a646a SHA-1: 368eff4af5d11b7666916fab09b937249b0c53a0 SHA-256: 95f366c291cd22d9d45a45c0aa45cc74648fc9e2414201a472944c2da23498ea
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that, when visited, could lead to further malicious activity. While no scripts were directly extracted, the presence of an external URI and the nature of the detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://zajinet.ru/wix?keyword=poe+soulrend+occultist+build
    • https://cdn-cms.f-static.net/uploads/4450356/normal_5fe9ad6163e3f.pdf
    • https://static.s123-cdn-static.com/uploads/4450634/normal_6005d1824c88d.pdf
    • https://cdn.sqhk.co/kagaxavog/hdHZZ9n/57900320410.pdf
    • https://cdn.sqhk.co/tewokozogop/cA2ighe/ecology_recycling_fontana.pdf
    • https://cdn.sqhk.co/wefenosefob/bghhhcA/arteriovenous_malformation_images_ultrasound.pdf
    • https://cdn.sqhk.co/ranetixeba/hdgd0jb/21537548964.pdf
    • http://buvalopexur.mygamesonline.org/45945819520.pdf
    • https://cdn.sqhk.co/kokedipemi/a7iigid/65219962944.pdf
    • https://cdn.sqhk.co/veludewozen/gii51rK/ground_handling_jobs_in_dubai_airport.pdf
    • https://cdn.sqhk.co/pulobegefuzi/ejizfhf/9786673162.pdf
    • https://cdn.sqhk.co/xufatirumina/hihggdP/dstv_dish_installation_guide.pdf
    • https://static.s123-cdn-static.com/uploads/4426696/normal_6000123b6af08.pdf
    • https://cdn.sqhk.co/ramidazumiko/gnSliep/rap_beats_on_apple_music.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bototiluwoge.atwebpages.com/sahih_al_bukhari_urdu.pdf
    • http://ruruwuvatokatal.onlinewebshop.net/edgar_allan_poe_poesia_completa.pdf
    • http://nojikigor.myartsonline.com/the_wanderers_where_are_they_now.pdf
    • http://gotenekopibijo.epizy.com/archero_hack_game.pdf
    • http://vizejopovixu.rf.gd/how_to_fix_your_ue_boom_speaker.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d38d.bin
eb79ece375eadc0e541e5c744a0204444e3e6780f857705e55ee50378f3f66af
pdf-font-stream PDF embedded font (sfnt) at offset 0xD38D 4864 bytes
font_01_sfnt_off0000e41f.bin
3d03e7255394c20cbd92cd99633380239b6110fe275aa34f69d2d33223d570c3
pdf-font-stream PDF embedded font (sfnt) at offset 0xE41F 10568 bytes
font_02_sfnt_off000108bc.bin
5d72d630640305d452d914085fd6c65e0d8125198bed8028c282d44fd0327be8
pdf-font-stream PDF embedded font (sfnt) at offset 0x108BC 16068 bytes