Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b70eea49cc96fa5…

MALICIOUS

PDF

76.3 KB Created: 2021-05-20 06:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 85700d5dbc61670a3e30cfd126e308fb SHA-1: 2c6ecc68a33f9081642b29a53963ccb45aae3a3a SHA-256: 8b70eea49cc96fa57adbc0bc1a8065fdd9c0a61a20de660a0be9ffa08469b1e6
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 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.
  • 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.
  • 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://lozipotod.ru/strik?utm_term=kahraman+tazeo%25C4%259Flu+iki+s%25C3%25B6z+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496815/normal_5fdc9c11761c5.pdfIn PDF document text
    • https://wajogivetiwi.weebly.com/uploads/1/3/4/3/134322864/rikunubipi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423429/normal_60375a9e524b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422161/normal_5fe464250b67b.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/zinofolujize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459464/normal_6065c61f1b9b6.pdfIn PDF document text
    • https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/4123010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426280/normal_603f4b3b556a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425227/normal_6034515d38471.pdfIn PDF document text
    • https://zovijewef.weebly.com/uploads/1/3/4/4/134400079/4980e8acf6.pdfIn PDF document text
    • https://motaxajofepox.weebly.com/uploads/1/3/1/3/131381237/8511471.pdfIn PDF document text
    • https://soxiwavarado.weebly.com/uploads/1/3/1/4/131437421/selirerigegisavi.pdfIn PDF document text
    • https://xuwaxubefoju.weebly.com/uploads/1/3/1/0/131069763/lipefizew-webamerejimoleb-patise-nimisigigasu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_606977c6be575.pdfIn PDF document text
    • https://sivaxawisebirim.weebly.com/uploads/1/3/1/4/131407763/974d69038831d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_6069239e00142.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5fc795ef2e497.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461485/normal_5fe5f1464b8ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6970287-3d42-4f1f-958a-4c924aab3860/how_to_draw_christmas_stuff_easy_art_hub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8113b5b1-088c-40f8-8f92-6ce4dad72833/digefitekiruxodojuvovaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb53240a-2ba7-4ea6-8326-985afe53fdae/is_doing_mba_worth_it_quora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5845c0b-2929-4ea1-9f73-0a525dc0c8f7/xamivelutabazoseroga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a73832-460b-4d4e-9d37-3c0476f9be41/79080334329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5baf685e-2007-48e8-8d02-0174759a17d4/what_are_the_rhyming_words_for_rainbow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac26983-4dec-45ed-998f-8e88f008d6e2/machine_learning_or_artificial_intelligence_quora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a44d32d-1496-406f-89ac-29e2aa04dcb6/salodonesofipeki.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE567 5732 bytes
SHA-256: 5e9eb1c79f09c8bda84c0573dd4c265c04813642cd4aba9901496fd2d0dd235b
font_01_sfnt_off0000f885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF885 13260 bytes
SHA-256: 53c2db7f2f6197b1d7d72d4daf3cea24b4f86ae23c526cbcf9417268cc587479

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