Malicious PDF — malware analysis report

Static analysis result for SHA-256 501f570faa03d896…

MALICIOUS

PDF

76.6 KB Created: 2021-03-30 16:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eb961cf918d9aa479ee1f59cce83028 SHA-1: d3b469286ef864330ffb4562a01a740150eb5aa3 SHA-256: 501f570faa03d896155da04c8a6fd55be903321c64972e27225d063538c888a3
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being `https://druttle.ru/wix?keyword=everstart+maxx+jump+starter+600+amp+manual`. This URL, along with others, suggests a phishing or credential harvesting attempt disguised as a product manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to delivering a payload or redirecting to a malicious site.

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://druttle.ru/wix?keyword=everstart+maxx+jump+starter+600+amp+manual
    • http://blankid.ru/297189500333ov86.pdf
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5fd676f689f0a.pdf
    • http://docita.fun/wirimiramikizotadexagaziyze2d.pdf
    • https://static.s123-cdn-static.com/uploads/4461204/normal_5ff966147698f.pdf
    • http://bitcoins-profits.com/epson_xp_800_fax_setupk0jih.pdf
    • http://fikakutipid.mygamesonline.org/sandisk_clip_sport_wont_charge.pdf
    • http://sejujanovemo.medianewsonline.com/88971473044.pdf
    • https://cdn-cms.f-static.net/uploads/4461780/normal_602359553b68e.pdf
    • https://cdn-cms.f-static.net/uploads/4465402/normal_6054447f12b24.pdf
    • http://bonifacy.site/cloud_computing_company_in_usast4eu.pdf
    • http://nadahul.ru/walmart_tv_stands_white00u3a.pdf
    • https://cdn-cms.f-static.net/uploads/4421639/normal_603fb7b7da47f.pdf
    • http://vigastlens.xyz/how_to_find_time_interval_physics9y6vg.pdf
    • https://static.s123-cdn-static.com/uploads/4490127/normal_6003b640c0a32.pdf
    • http://byseles.xyz/40240579901ldqdu.pdf
    • https://cdn-cms.f-static.net/uploads/4451039/normal_5fd354335ed8a.pdf
    • http://kexedeziferu.sportsontheweb.net/important_vocabulary_english_to_bangla.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/furunumaroxun/training_gap_analysis_template.pdf
    • https://s3.amazonaws.com/jakujakula/reveropikikidubagi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e940.bin
f1698fe641b6182910b64d10077ba06e8121d8dcf30640166399f13c4ef3e783
pdf-font-stream PDF embedded font (sfnt) at offset 0xE940 5420 bytes
font_01_sfnt_off0000fba2.bin
db1f6819604d93c4201d819379e792f60d6df185882358272b47d0ad25d883f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA2 12092 bytes