Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7e6da01f95bc9e…

MALICIOUS

PDF

75.4 KB Created: 2021-03-19 14:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec497c9978ac0667ad8cc10ef0c37ad0 SHA-1: e48fd9995b4a43e7e73e5e9af7da240227769094 SHA-256: 1d7e6da01f95bc9e64d45263d51245305f1b649c66a160b624ed0b3b8dd02a82
146 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_CALLBACK_LURE' strongly suggests a callback phishing or tech-support scam, where the document likely prompts the user to call a fraudulent number. Although no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics point towards a phishing or scamming attack vector, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://pelibifir.ru/strik?utm_term=dsc+1832+add+user+code
    • https://cdn.sqhk.co/mumaxeje/gVMzmic/big_bang_theme_song.pdf
    • http://gebikomuxe.getenjoyment.net/williams_allegro_iii_digital_piano_black_88_key_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4420905/normal_604ed76c0b6dc.pdf
    • https://cdn-cms.f-static.net/uploads/4480585/normal_604dc0b235fdd.pdf
    • https://cdn.sqhk.co/judigirowe/hhEjggl/jawizitexudomuj.pdf
    • http://mokaxizekebade.scienceontheweb.net/19955677481.pdf
    • http://venolilixe.mygamesonline.org/fisatekegejutux.pdf
    • https://cdn-cms.f-static.net/uploads/4473322/normal_5fd2271978570.pdf
    • https://static.s123-cdn-static.com/uploads/4445880/normal_5fc57497e66a8.pdf
    • https://cdn.sqhk.co/tivanosox/jxhdhcb/mimpi_gigi_copot_dalam_islam.pdf
    • https://cdn-cms.f-static.net/uploads/4475987/normal_604f12a61c5ce.pdf
    • https://static.s123-cdn-static.com/uploads/4475571/normal_5fe2f4301fed1.pdf
    • https://cdn.sqhk.co/zuxafopagad/fia2VHj/trucks_off_road_mod_apk_android_1.pdf
    • https://cdn-cms.f-static.net/uploads/4477147/normal_60146b281bb2b.pdf
    • http://dujopaximejuger.iblogger.org/sabozulutuzumozev.pdf
    • http://bamirajewenexo.medianewsonline.com/xeguwadifedogadakubel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sonatalub.epizy.com/pinesikasomebit.pdf
    • http://tokozod.myartsonline.com/22741145918.pdf
    • http://vowabok.epizy.com/acls_written_test_answers_2017.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_off0000e7ce.bin
2ebc919928c46c3ce0eb9a31b37a494a8c7865c36fa80ac9d0b0c2b1b0b763b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CE 5440 bytes
font_01_sfnt_off0000fa63.bin
f7fe14fc6581a992bf6832a9f5baa9649c541b0bbfcd1e201d0b72e17a4f1a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA63 11296 bytes

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