Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d7aca67c74273c…

MALICIOUS

PDF

47.0 KB Created: 2020-08-26 10:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8888df3155d8989eecb3300100c05c3 SHA-1: 1830a470444d9d21e9b4ddfa7c327ca2c15b0426 SHA-256: 30d7aca67c74273ca50eb44e7244748a675bb540b06b85f4fc77efe0021063f2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a URL that mimics a 'stream team tv apk' download. This suggests a phishing or malware delivery attempt. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse, potentially to mask the malicious redirector or improve its search ranking. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.com/pify?keyword=stream+team+tv+apk
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdf
    • http://zosod.susanlynchshamanicservices.com/uploads/1/3/0/8/130873715/xaxamupilirodimuka.pdf
    • http://files.kyle-a-piat.com/uploads/1/3/0/7/130776298/gawudurawesu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/validity_in_testing.pdf
    • https://cdn.shopify.com/s/files/1/0434/2431/7607/files/5th_symphony_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/8059/8172/files/xawomuwakukega.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/interview_questions_for_accountant_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/vubetibakojemowixesoxokor.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/esl_beginner_reading_passages.pdf
    • https://cdn.shopify.com/s/files/1/0441/2122/7416/files/bardasht_film_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/vegan_keto_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/41788633716.pdf
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/abang_long_fadil_2_full_movie_watch_online.pdf
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aa0.bin
979dd3370794b0b6ee8ec7ddf7741c2a86fb5a9bebe77a3d6b91ed33f4499e2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA0 4984 bytes
font_01_sfnt_off00008b82.bin
a6e1825c67538a7183a9ec8e1e6f06f5336ee71b14fd261b1131931fcdb2f317		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B82 10592 bytes

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