Malicious PDF — malware analysis report

Static analysis result for SHA-256 54cc49852be390b6…

MALICIOUS

PDF

51.3 KB Created: 2020-08-07 12:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d4e601034bcc6f3b65085588f32030b SHA-1: 8e2fd99c6597561dda4b859e34c6f692d09c706d SHA-256: 54cc49852be390b6fddfdafaa04ed06c460e1119e615e4e1e7817c6a2f3c6439
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Catholic study bible' and includes the malicious URL, suggesting a lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting. No scripts were extracted from this sample.

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=catholic+study+bible+donald+senior+pdf
    • http://files.americanhistorytour.com/uploads/1/3/2/8/132815220/6d9ccd6.pdf
    • http://files.theconsultancygrp.net/uploads/1/3/1/4/131406068/zozefifivebek.pdf
    • http://files.diplomainprofessionalstudies.com/uploads/1/3/2/6/132682919/vogujomabakuwobizef.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3735/files/pujidofuvubefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/zefugewagob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1305/4359/files/21257453399.pdf
    • https://cdn.shopify.com/s/files/1/0433/6369/6805/files/2577322566.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27622062760.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/64791808919.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/65816874599.pdf
    • https://cdn.shopify.com/s/files/1/0439/3969/2699/files/befakibosezowuzejitazana.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/10711729991.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/puzorazimesiziberunawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/62937663951.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0572/files/safety_harness_training.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/zosaworufikejokuxiva.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_off000065bb.bin
297fc8ff6f2bd6b0e0257e83f869178ceb67739b9c75d5cc474ad225aa51c961		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65BB 5392 bytes
font_01_sfnt_off00007800.bin
a437083ab47ade1c53fb672c7abf06d5e6eb3552ced81a2a3184ddbd11f0a9d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7800 10572 bytes
font_02_sfnt_off00009c65.bin
5f3764956a3f032a41c875d4264b2744e0aecdd61c74f424ef2728f57598c8c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C65 16180 bytes
font_03_sfnt_off0000b15c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB15C 4324 bytes

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