Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66105047c8791c7…

MALICIOUS

PDF

62.6 KB Created: 2020-09-23 03:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3383f9885846c01c60dfbcc3657a9ed3 SHA-1: a25dabbda33b53c126a098e9c80ab453278786dd SHA-256: d66105047c8791c75965e9b7efc22372a80701170cf3588e034cede827e66b56
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.club/wix?keyword=pokemon+volt+white+guide+pdf'. The document body, though heavily obfuscated, appears to reference 'Pokemon volt white guide pdf', suggesting a lure to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent, likely for phishing or malware delivery.

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.club/wix?keyword=pokemon+volt+white+guide+pdf
    • http://files.jmbensikdesign.com/uploads/1/3/1/4/131454620/fevorupun_nenonifo_burezokowu.pdf
    • http://sexupe.cestlaviehandmade.com/uploads/1/3/2/7/132710635/tigiwuzewew_mowumiwalin.pdf
    • http://lujasiku.bulldogathleticboosterclub.com/uploads/1/3/0/8/130814328/gatesozujuvit_nonubuluk.pdf
    • http://desixa.moonspherestudios.com/uploads/1/3/1/3/131381067/tedopipofamiges-satigesezawati.pdf
    • http://vorulop.kahproductions.com/uploads/1/3/0/7/130738882/xonadelidozi_zotedaja_kiborununikaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/tuzubudijilokifozop.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/android_emulator_nox.pdf
    • https://cdn.shopify.com/s/files/1/0479/4784/1703/files/laser_plumb_bob_uk.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/akhiyan_nu_aadat_punjabi_song.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/tell_us_about_yourself_examples_answers.pdf
    • https://cdn.shopify.com/s/files/1/0486/0257/9112/files/dujosupufowawunubevigavof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27622062760.pdf
    • https://64026c4e-0dfd-4621-abf6-0c21596b61c4.filesusr.com/ugd/c3548c_e3b88e6cf198462bb096e1e463e83a47.pdf?index=true
    • https://a1f66d76-0c30-42af-9406-fb7289dc4fc5.filesusr.com/ugd/7a7fb1_01aaaf46460440f393c6f50930e92b70.pdf?index=true
    • 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_off0000b5d7.bin
983fca771d6e89433d917eef2d228d0d0cedca42ed1323875f15318cd5d9a29e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D7 5188 bytes
font_01_sfnt_off0000c77c.bin
bb20bf9205637d53d0183a99aa3bd6de07c9b590210392749096b73265d9d2f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC77C 11116 bytes

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