Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ea7c010f03971f…

MALICIOUS

PDF

113.4 KB Created: 2021-05-24 04:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e778736c5f900a66e50a4c5164a75cff SHA-1: 28d44da9a254670a4a421000bf80b2348c8b242e SHA-256: d2ea7c010f03971f72c6bc00112b44648100cd108db93416ce0d9ffbd8d12bb5
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain associated with phishing lures. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a malicious intent to redirect users. ClamAV detection and ML classification further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/strik?utm_term=e-passport+application+form+riyadh
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/solefinemedalojove.pdf
    • https://static.s123-cdn-static.com/uploads/4482228/normal_5ff2bbb501e8e.pdf
    • https://velumosatowe.weebly.com/uploads/1/3/4/8/134883763/berugal-gijani-pizaz-kofiv.pdf
    • https://jomobezeg.weebly.com/uploads/1/3/4/6/134606819/c290bfb79e.pdf
    • https://kobenavu.weebly.com/uploads/1/3/4/7/134714827/rogiguka-fowumatoxa-zudusunuridaz-maromaretiw.pdf
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/denelizivozonu.pdf
    • https://cdn-cms.f-static.net/uploads/4443588/normal_604e0cbbf0f6b.pdf
    • https://giboritozi.weebly.com/uploads/1/3/1/3/131379296/5404090.pdf
    • https://cdn-cms.f-static.net/uploads/4462974/normal_60563515302b4.pdf
    • https://kenemujawov.weebly.com/uploads/1/3/4/6/134645985/4251319.pdf
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/pezezuridojin.pdf
    • https://texifafotolatip.weebly.com/uploads/1/3/4/7/134764930/b9e9e5c.pdf
    • https://xakivemo.weebly.com/uploads/1/3/0/7/130739368/wemalig_vevemazovipidem.pdf
    • https://vamoketuvet.weebly.com/uploads/1/3/3/9/133999376/6076690.pdf
    • https://gifukupuwabe.weebly.com/uploads/1/3/0/7/130775529/ab1391e2992bf5c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/49f2cb4d-ac22-4979-a970-13c9b11cc80a/fijovu.pdf
    • https://uploads.strikinglycdn.com/files/79cf1c39-0624-4e6e-b123-4bd6c6e15d93/possessive_nouns_and_possessive_adjectives_exercises.pdf
    • https://s3.amazonaws.com/mizeteb/dorian_gray_summary.pdf
    • https://uploads.strikinglycdn.com/files/bda0fe9b-0edf-4933-88b9-04ccb64fc1e1/high_on_fire_de_vermis_mysteriis_vinyl.pdf
    • https://uploads.strikinglycdn.com/files/ec893a23-57b7-4edb-842a-82f79db58057/raw_vegan_diet_weight_loss_one_month.pdf
    • https://s3.amazonaws.com/dazutun/8978003234.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001660f.bin
059e9dceda4afc0d7d4c7ffd06deb7f4300246141146175c5b376d8849aa057b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1660F 5156 bytes
font_01_sfnt_off0001775e.bin
bb9eb4f89744755512ad5726dee0447eb838b162b525922985f4a6b47525c338
pdf-font-stream PDF embedded font (sfnt) at offset 0x1775E 2344 bytes
font_02_sfnt_off00018167.bin
3def1a8299746815950f681dfeaabe8a35d8244f34f40c82a2329530dca76de6
pdf-font-stream PDF embedded font (sfnt) at offset 0x18167 11596 bytes
font_03_sfnt_off0001a8ec.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8EC 4324 bytes