Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bdc1ab0b7cc4fc8…

MALICIOUS

PDF

43.2 KB Created: 2020-08-09 10:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c0429ec030e2a57319353b75f8cff91 SHA-1: 3b244d3756483c7c538c8e841761962b4cd724d7 SHA-256: 8bdc1ab0b7cc4fc849538d2b9cccff3e44dce86222301f8ca59ee23983ee9605
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.ru/pify?keyword=hands+on+machine+learning+for+algorithmic+trading+free+pdf', is designed to appear as a legitimate download but redirects to unknown infrastructure. This indicates a social engineering tactic to drive traffic to potentially malicious sites.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=hands+on+machine+learning+for+algorithmic+trading+free+pdf
    • http://dopiwifif.theroombrighouse.co.uk/uploads/1/3/0/8/130813866/foduxasetatixo-jabevisemepased-vegexa-suwifejoberedo.pdf
    • http://relapo.trivalleysir34.org/uploads/1/3/1/4/131407995/18ad11e90.pdf
    • http://files.cranewyork.com/uploads/1/3/0/7/130738960/nakivenajamoj_miwaxesimo_rirenebome_revofuvoful.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/osrs_dwarf_multicannon.pdf
    • https://cdn.shopify.com/s/files/1/0437/9341/6349/files/sopedifufovej.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/gamavedukozezetuvub.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/metotipivulobulajonegar.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/42950311504.pdf
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/razamepupugukojirasapibef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/25229550995.pdf
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/vexafaviguxaxagatojigip.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/social_anarchism_or_lifestyle_anarchism.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/15766340682.pdf
    • https://cdn.shopify.com/s/files/1/0436/7836/7897/files/airspace_classes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/plural_of_prospectus.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_off000069a3.bin
824f9d38c066734af6022ce4f835d91c296ee0ccaa832e08f67c314d2d72f908		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A3 5528 bytes
font_01_sfnt_off00007c4b.bin
727fbb26d0f1f9baca88dcef37b5a6d792532b32aacf5e4140ce4927f561825c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4B 10292 bytes

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