Malicious PDF — malware analysis report

Static analysis result for SHA-256 0124e587c409f2c5…

MALICIOUS

PDF

79.5 KB Created: 2021-03-04 21:49:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b1af47c8a745406299243d97105c88b1 SHA-1: 8c212ad1787eff209068bcdb05654a6bca79f7c0 SHA-256: 0124e587c409f2c52b060cb0dbe26a9415f1abbf69ad28eae00fda5f843c8eae
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 trojan. It contains a large number of embedded URIs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/aws?utm_term=wiertarka+bosch+pbh+2100+re+cena PDF link annotation
    • http://vogolimipogusoz.mypressonline.com/sedoda.pdfIn PDF document text
    • http://wajazenizur.mywebcommunity.org/vafep.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/the_animators_survival_kit_espaol_gratis.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/63000896721.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/13345928481.pdfIn PDF document text
    • http://vakiduweg.mygamesonline.org/mushoku_tensei_light_novel_release_date.pdfIn PDF document text
    • http://tonevagewalilu.medianewsonline.com/kupevekivagobefokaka.pdfIn PDF document text
    • http://finofoze.22web.org/44332396006.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/warapagefasovi/california_dmv_permit_test_2019_answers.pdfIn PDF document text
    • http://noratev.myartsonline.com/purple_cow_menu_prices.pdfIn PDF document text
    • http://kezazole.epizy.com/animal_which_can_live_without_oxygen.pdfIn PDF document text
    • http://nujugeteteda.myartsonline.com/can_i_learn_psychology_online.pdfIn PDF document text
    • http://roporuti.onlinewebshop.net/zakusipakezegade.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/xudarat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ee7ef41-9972-4963-9a4d-fcb62d117272/digitech_rp55v-00_manual.pdfIn PDF document text
    • http://widefafibix.rf.gd/wuzilixuwaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/division_property_of_exponents_define.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd78eb70-3a0a-4c65-a75f-73d15ba60cfa/best_warrior_cat_clan_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe25fdd1-2051-4306-8388-616c6c8928a4/7829613460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ca00e1-9575-48aa-a722-fcad933f53d5/6516514157.pdfIn PDF document text
    • http://wevaxelim.rf.gd/bouncing_ball_lab_report.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/81137468570.pdfIn PDF document text
    • http://kiwaxujunexozet.epizy.com/long_langstroth_hive_-_free_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10ffcca3-1b00-41bd-abf0-5d83b7a189fb/planet_fitness_membership_cancellation_fee.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE808 5320 bytes
SHA-256: daaff6e5a2e9bbf520f874a7d0fbc864c3adcaf5b3d218cd845a138fd7197d36
font_01_sfnt_off0000fa1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1B 12512 bytes
SHA-256: 679a2ca55dd545d41dcd5de89682f2b28ee19cf3784d72ad5c21c3e801a9d68d
font_02_sfnt_off0001222c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71