Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a2db6a2791ede83…

MALICIOUS

PDF

69.3 KB Created: 2021-03-10 08:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22635bd43dbc877340886620afa95540 SHA-1: d15f788b91f3b0c5992752ca8bc35ddd92403b34 SHA-256: 6a2db6a2791ede834fd79195dd3eb3812392e22f7036988374325ac0f700469c
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, indicating a phishing or trojan threat. It contains an embedded URL that appears to be the primary lure, disguised as a weather report. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/123?utm_term=john+day+oregon+weather+report
    • https://cdn.sqhk.co/rilowikapaz/nCjjihL/ulysse_speedometer_pro_1._9._91_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5feef1cdf18f4.pdf
    • http://neditaxuvim.getenjoyment.net/membrane_bioreactor_seminar.pdf
    • https://cdn-cms.f-static.net/uploads/4465685/normal_603aeb32c0e99.pdf
    • http://albatros-trans.ru/bertaruh_rindu_om_adella8yxfz.pdf
    • https://cdn.sqhk.co/natokaze/mMRiaqu/2_chainz_lil_wayne_money_maker_video.pdf
    • https://cdn.sqhk.co/dikapagoloza/NJauigh/dadopajenog.pdf
    • https://cdn-cms.f-static.net/uploads/4488837/normal_603ad6057aee0.pdf
    • http://canonsburglake.org/who_was_named_the_sexiest_man_alivehskj9.pdf
    • http://pifovabu.getenjoyment.net/crc_concise_encyclopedia_of_mathematics.pdf
    • https://cdn.sqhk.co/lexewagoz/Fihz7w8/nutukimevemimofus.pdf
    • http://mavigawika.scienceontheweb.net/marketing_plan_executive_summary_ppt.pdf
    • https://cdn.sqhk.co/delobepaziw/g5uEhd7/busy_beavers_shapes_colors.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/minaxigevani/what_is_atomic_structure_in_science.pdf
    • https://s3.amazonaws.com/telasebisu/windows_update_assistant_location.pdf
    • https://s3.amazonaws.com/zesixefe/avoid_junk_food_information.pdf
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_9d366322a79048e4b9f9b4f029e8fcb3.pdf?index=true
    • https://fb5b3b17-6e6a-47c5-ae49-26eddba71e57.filesusr.com/ugd/aff7be_a59e2c2805584bc785aba374365ba3d3.pdf?index=true
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_f233de27a4ec4c74abd47cd46a84e8c6.pdf?index=true
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_22020e3b75c742809303858af5a54bac.pdf?index=true
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_ad6897da7f0b491b8a5c35441d321dbd.pdf?index=true
    • http://sijadogif.atwebpages.com/5000_year_leap_free.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_off0000d10b.bin
f6d3f5947e4815d0b7bba20e0cb058ce4e3d1af218c30b468b1c3db28dfc38e9
pdf-font-stream PDF embedded font (sfnt) at offset 0xD10B 5196 bytes
font_01_sfnt_off0000e2cb.bin
2af35d7d53c6ea466852bb6110543c58630c2ccf33b0d127fc3bf254968f5a9c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 11000 bytes