Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce38e87d25384391…

MALICIOUS

PDF

75.2 KB Created: 2021-03-25 12:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99094fe99bc4e50763a73fed0d94bea2 SHA-1: d2374634de06e3287f3780e6129ff7020d1fd03b SHA-256: ce38e87d253843914b449b203c6e8314926c27d6f812f524e9bf8e2731d759bd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by both heuristics and ClamAV as malicious. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to redirect users to a potentially harmful website, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=jumping+up+and+down+shout+hosanna
    • http://sutiboju.sportsontheweb.net/automobile_air_conditioning_system_book.pdf
    • https://cdn-cms.f-static.net/uploads/4426418/normal_601e026a5f187.pdf
    • https://cdn-cms.f-static.net/uploads/4417128/normal_6059736f76601.pdf
    • http://ecoservice-vlad.ru/zorifasagexixoo7r36.pdf
    • http://nubolutlion.xyz/peladavinorelaneninanawyrym.pdf
    • http://wivafojoki.22web.org/archery_2_mod_apk.pdf
    • http://supportcopyright.net/fidic_contracts_guide_1st_edition_20204o3v5.pdf
    • https://kosefunoz.weebly.com/uploads/1/3/0/7/130775186/vorafiwo-gopodipipesusum-wefudakitetigo-sexigutedupoxaz.pdf
    • https://cdn-cms.f-static.net/uploads/4390328/normal_601c70036a81b.pdf
    • https://cdn-cms.f-static.net/uploads/4380395/normal_602463b1c9daf.pdf
    • http://boldly-grow.com/tefitagamizuxuwamebekega8cxm0.pdf
    • https://dinijituwit.weebly.com/uploads/1/3/1/6/131606252/jixagike.pdf
    • https://serewutedirafam.weebly.com/uploads/1/3/5/3/135339767/7efc85ce9dfe35c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pejagezuwuki.epizy.com/how_to_tell_if_a_hydrogen_bond_will_form.pdf
    • http://jewofeket.onlinewebshop.net/iglesia_adventista_culto_en_vivo.pdf
    • http://xukokumo.myartsonline.com/14294250942.pdf
    • http://tososite.onlinewebshop.net/reviews_shark_ion_robot_vacuum_r75_with_wi-fi_rv750.pdf
    • https://uploads.strikinglycdn.com/files/62d0090a-df18-4341-aeeb-e5fe4da7481d/tefomepanewuw.pdf
    • https://uploads.strikinglycdn.com/files/7ac39c0a-7b04-4ceb-bd43-8c3deea76a06/18333288164.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_off0000e669.bin
a77b8c1fe8e1aeb96e6f9ae7d66a5362d463c90a4ee10fa5fcc9db8c20e36dcc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE669 5328 bytes
font_01_sfnt_off0000f872.bin
270f7e4fb657b35e72efd2238cb4ef50ba194d482838c7ff0c75827eb881bc27
pdf-font-stream PDF embedded font (sfnt) at offset 0xF872 11812 bytes