Malicious PDF — malware analysis report

Static analysis result for SHA-256 df061f13362523a7…

MALICIOUS

PDF

76.1 KB Created: 2021-03-07 20:24:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: ba58db702e4b24556dae666c56dea961 SHA-1: 9395b187d2d94c87e3a3984187f51bea8a25d594 SHA-256: df061f13362523a7e1df77a3f88085eb91c5ea62ec5e97a989e99048367c9d88
146 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. The document body, though heavily obfuscated, contains keywords related to account creation, aligning with the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ponafet.ru/wb?keyword=create%20groupme%20account%20without%20phone%20number PDF link annotation
    • http://fruct.space/what_does_hyposecretion_of_adh_causeed5hm.pdfIn PDF document text
    • http://salukapebuke.iblogger.org/jasoda_sarkar_all_baul_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fd76fd4af126.pdfIn PDF document text
    • http://mojenisijita.mywebcommunity.org/printable_childrens_bible_stories_with_pictures.pdfIn PDF document text
    • http://cupe1.ru/72605199408p4v4k.pdfIn PDF document text
    • http://jopkapopka.online/zopozonuhii5p.pdfIn PDF document text
    • http://neojust.ru/73693322490fspij.pdfIn PDF document text
    • http://reduslimer.website/nabemubiboxmwube.pdfIn PDF document text
    • http://gtmedis.com/free_graphic_design_app_for_macbookxsrr1.pdfIn PDF document text
    • http://floradoma.net/charmsukh_complete_web_seriesw5ziw.pdfIn PDF document text
    • http://vebuwovivulab.mygamesonline.org/how_to_get_foundation_testers.pdfIn PDF document text
    • http://cccckkkkkdd.space/object_pronounsdec04.pdfIn PDF document text
    • http://fresh-ita.space/gaap_accounting_standardsqnx73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405950/normal_5fe48d681a325.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wokonudiru.epizy.com/rosujilolazuwumamepipu.pdfIn PDF document text
    • http://guvenup.epizy.com/93708676168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8fe241-fc3c-4765-8cff-0332797751ba/class_5_maths_book_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f19b97b-2d87-46d7-ba92-4c0d5e57025f/jagazazoropa.pdfIn PDF document text
    • http://zapurokorilagar.rf.gd/rabebaresezev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669c493f-8a7f-4000-b5a2-0a08b151d2a7/58742988570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee5f2c30-2b2f-416c-a02b-9a635ad3cbab/jitakuliterurumuwiruve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd1ce92-a27b-465c-ad98-62e1e9c9bdf9/60078960884.pdfIn PDF document text
    • http://zuvuzevo.atwebpages.com/woxuwosuwijatetuvomoluji.pdfIn PDF document text
    • http://wigazimo.epizy.com/6769572666.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/m_audio_fast_track_ultra_driver_windows_10.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_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 5276 bytes
SHA-256: 3a3a12b2538622a23c42383bd89c90dc70eff703f8023d0d7f0b06df62bcc674
font_01_sfnt_off0000fdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB3 10268 bytes
SHA-256: ae49a263a02077803485e5c9096473953e3f22ff9e4415f84eb8168c159fb785