Malicious PDF — malware analysis report

Static analysis result for SHA-256 461af4304afbadd3…

MALICIOUS

PDF

82.5 KB Created: 2021-02-28 06:30:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: abad606ba9d0c4b7460b3df500ea3dde SHA-1: a20a485f918f250c084ad2567e367157cd985ab4 SHA-256: 461af4304afbadd305348d0e6807ab930f9d79ad2a97b7522fe8fe4a42bfd2c7
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to finding prices on Amazon, likely a lure to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://jumiwimov.ru/aws?utm_term=how+to+find+the+best+price+on+amazon PDF link annotation
    • http://sodahub.pro/porque_haku_parece_mujeri16iq.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/Tgdjjc7/endless_car_traffic_racing_2020_new_car_games.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/ramipadadefenure.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/why_does_old_aspirin_smell_like_vinegar.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/gikNKjc/dsi_24._bolge_mudurlugu_kars_kars_merkez.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/80870232220fqsos.pdfIn PDF document text
    • https://cdn.sqhk.co/segexiji/hcqvjbl/farm_heroes_saga_unlimited_boosters.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/koginuzegusetatiwi.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/mepakozukanunizibusitew.pdfIn PDF document text
    • http://punejew.mygamesonline.org/80432672621.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/95992225762.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/vilujomoxewodimifoban.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/pneumonia_pada_anak.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/60740535909.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/1400757942.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/68925576336.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/27276674487.pdfIn PDF document text
    • http://disoluje.myartsonline.com/bojotasatefimoxiloruf.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/present_perfect_continuous_exercises_multiple_choice.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_off0001033f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 5608 bytes
SHA-256: a0583ae19222d61e16229c5d8627024e84d19bd98b4134c32fe4735edf87a68d
font_01_sfnt_off00011638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11638 11288 bytes
SHA-256: c496caa1c888c395991647636b29e2756f2e4149cf4fa0e10130477f2ab63cf2

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