Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45ab2f377206bca…

MALICIOUS

PDF

83.1 KB Created: 2021-03-15 06:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b5d88ee14c25cde48d21a3fbb98f83ae SHA-1: 06aae8be9d212191a8c5808203138391167d09de SHA-256: e45ab2f377206bcaab4ab35351567e9a2cd5264ad53dd5ce20eb4f4b7a111a00
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, specifically as a phishing or trojan. It contains numerous external URIs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The primary lure appears to be 'wildgame innovations feeder timer instructions', directing users to a URL on jottigo.ru.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/strik?utm_term=wildgame+innovations+feeder+timer+instructions PDF link annotation
    • http://webmastervlad.ru/rebimuli4r62z.pdfIn PDF document text
    • https://panikudar.weebly.com/uploads/1/3/1/4/131437701/fobeladot.pdfIn PDF document text
    • http://vashastrahovka24.ru/how_to_change_avatar_photo_in_call_of_duty_mobileabk4p.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/what_is_direct_teaching_method.pdfIn PDF document text
    • http://podarokinsta.site/18516373072kf0z8.pdfIn PDF document text
    • https://tilijaxak.weebly.com/uploads/1/3/1/3/131381787/4998262.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/50895057699g9xr8.pdfIn PDF document text
    • http://purpless.vip/dunkin_donuts_chocolate_donut_ingredients6043e.pdfIn PDF document text
    • http://afracheat1.xyz/jagubi4d1sq.pdfIn PDF document text
    • http://vurujupafowutox.mypressonline.com/bigenixoda.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/93399004951.pdfIn PDF document text
    • http://rm-swis-mine.com/jelavepepibetril3.pdfIn PDF document text
    • http://coloradocustomelectric.com/states_and_capitals_game_sheppard_software568fy.pdfIn PDF document text
    • http://copriyghtconfirmed.com/rifumozijabomiso4nktw.pdfIn PDF document text
    • http://tuzirawejaw.mypressonline.com/how_to_buzz_cut_fade_at_home.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/how_to_service_a_vintage_typewriter.pdfIn PDF document text
    • http://sajoveguduv.onlinewebshop.net/robedinibopekod.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/913889124.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/berexukafojejovasazisiju.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/6821205963.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/wejepotenebumifaxibafoju.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45C 5416 bytes
SHA-256: ae27371ae4ae96ad7dd6da73896a819713a62870a845e7c413efe9ef281f56cb
font_01_sfnt_off000106c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C4 2232 bytes
SHA-256: cbf8ba853d5c9b3a80ee53ed5897c6e9ea55851258e61a796933ec54dc0a0390
font_02_sfnt_off0001106c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106C 10528 bytes
SHA-256: e25c37d1fa7f16f2fb65629e970c291f2b55eecae72f66f5aa8a5e97e0a7561d
font_03_sfnt_off0001349b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1349B 2320 bytes
SHA-256: 45ab7a5a6775c4e1486bac817a95d1d53993cdb8f134696a76aa1f7593382e9f

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