Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ff616861124dec…

MALICIOUS

PDF

46.1 KB Created: 2020-08-19 01:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cff9018d4502586d700bbd790a82425 SHA-1: 951c7b049e403de529098302f743176415e560b4 SHA-256: 56ff616861124dec28486ce823e1588a2a95aa98201bc561940aae135116b0b6
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to '2017 annual franchise tax report delaware instructions' and a URL that matches the malicious redirector. This suggests a phishing or social engineering lure, aiming to direct the user to malicious infrastructure. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=2017+annual+franchise+tax+report+delaware+instructions
    • http://files.andersrunesson.com/uploads/1/3/0/8/130814124/taxapamiwijowaw-lewin-gopoxim.pdf
    • http://wudadidu.countryheartfarm.org/uploads/1/3/1/0/131069934/vufar_mejuves_kokugilex_toperixikumarir.pdf
    • https://cdn.shopify.com/s/files/1/0434/5954/3192/files/academic_performance_of_students.pdf
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/calisthenics_unity_full_body_workout_program.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/que_son_antivalores.pdf
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/6148099715.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/swf_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/rapidex_english_speaking_course_bangla_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/babutizerol.pdf
    • https://cdn.shopify.com/s/files/1/0433/3302/5960/files/decrease_size_acrobat_pro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000650e.bin
77d72c8b7c2d7279cac950894baac7ff2ebbc7fa563f0e185b76cadce1fcf593		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 5596 bytes
font_01_sfnt_off00007821.bin
7fdefddad94b19e238c9e5987442117c285b530627b9f0953382c997a162e25f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7821 10852 bytes
font_02_sfnt_off00009d40.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D40 4324 bytes

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