Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2f154ee4ebf0a9…

MALICIOUS

PDF

74.9 KB Created: 2021-01-04 22:17:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: af9a2821a0dda84b78c0869050fb69dc SHA-1: 44cd480bf9c36925a2ad986a70149dd3cdcb3f07 SHA-256: 5f2f154ee4ebf0a930a2d9836e448698c402533f0b8edbf03231ac05b75f7660
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'traffking.ru'. The document body, though heavily obfuscated, contains text related to 'Ibm ts2900 tape autoloader driver', suggesting a lure for a technical document or driver download. The presence of numerous embedded links, including a link farm, further supports a phishing or malicious redirection attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/aws?utm_term=ibm+ts2900+tape+autoloader+driver In PDF document text
    • https://pejagefetem.weebly.com/uploads/1/3/0/8/130815482/cd963945dece.pdfIn PDF document text
    • https://gikusevenax.weebly.com/uploads/1/3/4/5/134529244/sasutomepexadit.pdfIn PDF document text
    • https://nodokesomizi.weebly.com/uploads/1/3/4/6/134656280/rajabejuzaniz-rasakorufimizo-kanojaz.pdfIn PDF document text
    • https://rarowovi.weebly.com/uploads/1/3/4/6/134664267/rexasadajemowa.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/moduxanakuri/ffxiv_leveling_guide_30-_40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/866a3de2-dfb2-4083-ba84-cd58f49d5f89/tiktok_download_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff432c2c-bc06-458e-9bcd-0829f1227ed0/donald_passman_all_about_the_music_business.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/movies123_free_movies_online_joker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/666edfd8-a252-408f-8b82-ddf9d8820161/fumejarixewuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/260a7ebf-b2af-4563-93e7-3f5cd34ad0ca/30337396186.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/ley_de_newton.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/naruto_shippuden_episode_225_english_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/movado_series_800_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3baf7e92-888b-4179-ad8a-173899d34c45/51341213313.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_off0000daf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF2 5448 bytes
SHA-256: 5f8557045ed69c9de90a80d9b8d472475733afb931b10febda151f3507f51664
font_01_sfnt_off0000ed6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6A 10292 bytes
SHA-256: 64a9a5bb1e3c95c1337c83f018c0b7c31bfbb5f762739b17d5431a1d3715adb8
font_02_sfnt_off000110b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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