Malicious PDF — malware analysis report

Static analysis result for SHA-256 1014352be124fb75…

MALICIOUS

PDF

76.2 KB Created: 2021-03-15 20:17:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 610c3d500bcbc2479aef9fb9fe43d23b SHA-1: 83d0763f86d755dfc7f5a200f5df15021ed137e3 SHA-256: 1014352be124fb75590d9132b7cd9ce7f4837295deec6a8a2d1c2c3ba44004c5
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, with one pointing to a suspicious domain ('jumiwimov.ru') that is likely used for phishing or distributing further payloads. The PDF's structure and embedded links suggest it's designed to act as a deceptive front to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=harry+potter+prequels+and+sequels
    • http://vakekaninu.iblogger.org/88419833870.pdf
    • http://juxoxelobonoje.22web.org/systematic_parasitology.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_dca0a58c95a9485bbc1bf88a12af8eaa.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d5c225dd-18f3-4669-b445-21503feb4e41/ross_stores_opening_back_up.pdf
    • https://s3.amazonaws.com/dotivaf/media_player_classic_64_bit_free.pdf
    • https://uploads.strikinglycdn.com/files/de448e03-e683-4287-83d9-d9c23d31bdb0/five_nights_at_freddys_the_silver_eyes_series.pdf
    • https://uploads.strikinglycdn.com/files/ab88a100-e3de-4916-9331-afa393322a6d/35815532652.pdf
    • http://zukovijaxi.epizy.com/pokemon_fire_red_cheats_rare_candy_gba_emulator.pdf
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_b1b97e1984934da3bb8c5fa6936de3da.pdf?index=true
    • https://uploads.strikinglycdn.com/files/693bfa62-51b4-47cd-afc5-36aabfe19f53/77598277610.pdf
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_0208b2d995b44aab9d27bc98934d15a4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bc866a58-89c4-4318-b749-75617f98b6d9/jisebusek.pdf
    • https://s3.amazonaws.com/savukojubusum/ghp_file_l_g.pdf
    • http://gulisolira.rf.gd/sumewabopabususuzoxa.pdf
    • http://xatosizukav.epizy.com/40169217221.pdf
    • https://59cf682b-6680-4a08-8b8d-0472bab64ef7.filesusr.com/ugd/d7d6cd_a7ca980d38c94ad0b26d02c995f8264d.pdf?index=true
    • https://s3.amazonaws.com/pilazi/what_is_an_old_norse_poem.pdf
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_5cba2b2edb6b435f81adb145c9196f56.pdf?index=true
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_e9143bb44ece4a1b95b80df97b8f1733.pdf?index=true
    • https://s3.amazonaws.com/bezutu/2928291060.pdf
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_891215cb81a5440984c34565c8ef08e3.pdf?index=true
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_ae0a9ec487f4491d9a96e7c741b67825.pdf?index=true
    • 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_off0000eb12.bin
db7b13ff0eea8b7af14e8395ec71117e0d0cba6a0bebb57f11f2ac9ae17383b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB12 5144 bytes
font_01_sfnt_off0000fca3.bin
2fff019336217ccf7304494e31706f5351cd126bb621e55c29deb71f9cea58bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA3 11524 bytes

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