Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79e7f95832f4251…

MALICIOUS

PDF

52.8 KB Created: 2020-08-24 16:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10ebcff4f4efc68615870b2069e3523c SHA-1: 07ac3c4ddf4913b20215593f175eb7bbe3e90f82 SHA-256: e79e7f95832f4251fd95b67078ada9a10fbbc62ca10bc62f9bb68dff2c2b9ac4
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is part of a link farm designed to attract traffic. The document body, though heavily obfuscated, contains text related to 'police clearance certificate form bd' and the malicious URL itself. The presence of multiple embedded URLs pointing to Shopify domains, combined with the malicious redirector, suggests a phishing or scam attempt.

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.ru/pify?keyword=police+clearance+certificate+form+bd
    • http://files.turninganewleafstore.com/uploads/1/3/0/7/130776101/814f70e3.pdf
    • http://files.jonascain.org/uploads/1/3/0/7/130738755/4ca03c.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/rudezase.pdf
    • https://cdn.shopify.com/s/files/1/0432/7748/4196/files/using_voicemeeter_with_discord.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/30390452643.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/rimefuzipubufidojujuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/80704522310.pdf
    • https://cdn.shopify.com/s/files/1/0432/9327/8372/files/cosy_house_luxury_bamboo_sheets_review.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/national_appraisal_guide_for_mobile_homes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/star_trek_beyond_putlocker.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9406/files/xubikimoxutimowelow.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/importance_of_genetically_modified_crops.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/rinogojubelal.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078a8.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A8 2828 bytes
font_01_sfnt_off000082a3.bin
76cb1097d5fba4fa3b15ba553d5f9995cad2c840436a71bafb4315ec21707a41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A3 4920 bytes
font_02_sfnt_off0000932d.bin
89c519b6dabd6a54ad4444564dde3ed43bbd655d86187aff569d04b33ffbc33a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 10692 bytes
font_03_sfnt_off0000b7ba.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7BA 4324 bytes

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