Malicious PDF — malware analysis report

Static analysis result for SHA-256 4032fd0c0899b9db…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 07:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59bc20cad27b647784298325e8616318 SHA-1: 261938f025d67513e9b7691f6007e88cf1e3d1e6 SHA-256: 4032fd0c0899b9db8bf66396a087f12456eca7312a9d64a99450a8b08cb190d4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=adobe+reader+9+filehippo'. This URL is designed to trick users into downloading software by impersonating a legitimate download source. The document body also contains this URL and references 'Adobe reader 9 filehippo', reinforcing the lure. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content through deceptive links.

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.cc/pify?keyword=adobe+reader+9+filehippo
    • http://files.katyscarlett.com/uploads/1/3/0/9/130969241/63e9b81.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0437/0599/1321/files/dororo_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/formulaire_attestation_d_employeur_destine__ple_emploi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/honda_element_manual_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/besharam_movie_mp4moviez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/present_simple_vs_present_continuous_exercises_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/area_of_shapes_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/sitodovowuvalowutinodexer.pdf
    • https://cdn.shopify.com/s/files/1/0454/9489/4744/files/past_tense_irregular_verbs_exercise.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_off00005f4f.bin
13bbe4e9d0958fc3a237a163fd0aa4948a6d6264631a1fc6a0e3b96aed997c3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4F 5236 bytes
font_01_sfnt_off0000710c.bin
4e0b5aa5a8252f25624eda97d4fbeaec2846bbe68bfc2610fabfb4aff7776c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 14332 bytes

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