Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a8fa6d6361b69e…

MALICIOUS

PDF

76.3 KB Created: 2021-03-30 13:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5746f97d7ebd412fe8517824c1b18d06 SHA-1: de07f385280a7fc5a75c3c6676c685e4fc5b4051 SHA-256: b0a8fa6d6361b69eccceff8affc85cd6e7f2ac22197144f610dc51d97699bc08
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many of which point to suspicious domains and are likely part of a link farm or phishing scheme. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest the document's primary purpose is to redirect users to malicious sites, potentially for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://druttle.ru/award?keyword=french+adverbs+list+pdf
    • http://lamakexo.scienceontheweb.net/topezuxazazulurojarize.pdf
    • http://papawugamajube.mygamesonline.org/dameso.pdf
    • http://nokilibetajew.mywebcommunity.org/giwujekarituxoma.pdf
    • http://giwosesupalu.medianewsonline.com/inductive_and_deductive_reasoning_exercises.pdf
    • https://cdn-cms.f-static.net/uploads/4370071/normal_6015876dbb1fa.pdf
    • https://cdn-cms.f-static.net/uploads/4457011/normal_5fe747cab87fa.pdf
    • https://tebugusenaj.weebly.com/uploads/1/3/4/8/134870623/1871394.pdf
    • http://bazunujovi.scienceontheweb.net/taylor_ice_cream_machine_parts_near_me.pdf
    • http://xufonewujisos.scienceontheweb.net/penatalaksanaan_anemia_defisiensi_besi_pada_anak.pdf
    • http://gagivukamuw.getenjoyment.net/wobuwojituweluguz.pdf
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/korerizijabuboluw.pdf
    • http://zixaxagewan.mypressonline.com/18th_amendment_in_1973_constitution_of_pakistan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/667d12f6-5d1c-4295-958b-ffdf8321fe92/how_to_get_better_at_fantasy_basketball.pdf
    • https://uploads.strikinglycdn.com/files/2014e9e4-78c0-43b2-82be-77149c67db7c/sebapanafomap.pdf
    • https://uploads.strikinglycdn.com/files/85928571-70d1-4de6-b619-2816238b1d2a/98534216637.pdf
    • https://uploads.strikinglycdn.com/files/2b5f0f94-7e5c-439c-9cab-bdaaa1cb4c60/28170378235.pdf
    • https://uploads.strikinglycdn.com/files/18e1ecf8-6879-439e-842f-9e79678560ed/delonghi_convection_toaster_oven_manual.pdf
    • https://uploads.strikinglycdn.com/files/f2aaef3c-b526-42f0-a38a-7634bdf5c451/lg_8000_btu_window_smart_air_conditioner_with_wifi.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_off0000ec62.bin
6ab6a06db2b33cac7f6c9549d658c58bbdd9814a57e65fd4e8fd6901f9fd040d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC62 5396 bytes
font_01_sfnt_off0000feb9.bin
4e2fd465c9fcf090508c2d60b2ea4b48be2111422137035ef0db34f2ebb1ae09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB9 11636 bytes

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