Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e09657b27ad953…

MALICIOUS

PDF

52.6 KB Created: 2020-07-29 20:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6fca16a082cbfdafcf17fb884b042ad SHA-1: 728994f180a22ea6522bb31abfb7070fea312a06 SHA-256: 01e09657b27ad953c299a0be5d3eccef53256c751f10727c8695bf0271e8225b
154 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 to 'ttraff.com'. This URL is presented as a download for 'lok sabha election schedule 2020 pdf download', indicating a social engineering lure. The PDF also exhibits characteristics of an SEO link farm, with numerous links to other PDFs, suggesting a broader campaign to distribute malicious content. No scripts were extracted, but the primary attack vector is the malicious redirector link.

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=lok+sabha+election+schedule+2020+pdf+download
    • http://files.koosdesign.com/uploads/1/3/1/4/131437567/df0ad6e047fd1.pdf
    • http://files.fourwallsnoceiling.com/uploads/1/3/1/4/131409098/65fcd9e.pdf
    • http://files.ramyaravisankar.com/uploads/1/3/2/6/132682386/nekitinin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/91498090221.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/80245927999.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/diloverunufaditeviroson.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/gemebadutesanetarusowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/ginadidinolijisubonuvovaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/92070929222.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/rogubed.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/81906974847.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/48797638341.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/wonenimadepumom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/wukadopu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/45553356644.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006151.bin
f101ed73d0a245c148b7d43e44aa5aac07ec344c58c9f7c208245cd67da72999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6151 5540 bytes
font_01_sfnt_off00007431.bin
574882da0261f5cdfec82fc9bc83a29bc3765f953803098a6d5758b4bd73a122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7431 10368 bytes
font_02_sfnt_off000096eb.bin
c83653c06c050b5620c27d9467f96ae76c095100a35812f59a939b75fae7bdf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96EB 16096 bytes
font_03_sfnt_off0000abe9.bin
e22725f9c42697478a05d35cdeb2957e145956965de8535405246747d0ee94c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABE9 6388 bytes

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