Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc2f1e2e5db3d14…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 22:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1e48dfb6b92578b5bdef9c09b64a93f SHA-1: ad4a375d6c184e951288bbc2651dc28ed4db6664 SHA-256: 2fc2f1e2e5db3d149bfea27faabbf99c4d05bace6b517adb435f393c8041248c
152 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=all+types+of+camera+shots+pdf', which is a known malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or phishing lures.

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.cc/pify?keyword=all+types+of+camera+shots+pdf
    • http://files.thebucolicyogi.com/uploads/1/3/2/6/132682868/xuvavodavukozofe.pdf
    • http://jurozemu.riserailsbacksports.com/uploads/1/3/0/7/130776208/ziletupix.pdf
    • http://files.purfitnesshealth.com/uploads/1/3/0/9/130969573/kedadafuzem.pdf
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/povutejuzepeboz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5132/6371/files/sumepedazezugudutebarujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/binodojidugaxilav.pdf
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/taresusidafi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2846/1206/files/66043789839.pdf
    • https://cdn.shopify.com/s/files/1/0434/9919/2472/files/bookmark_onedrive_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/kamidori_alchemy_meister_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/dudivavivutifelileza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/biwosuzazibuvawumup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/93675983827.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_off00006b1e.bin
e801282a89b77aba5ff99a14c070fe3f645c59dea91e3a6b8d10656a13c2bfcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1E 5484 bytes
font_01_sfnt_off00007da9.bin
c6d6741a55884d87b46ac8bba9754a2c6b04c4b396b0d6672c942911c19d0c30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA9 9856 bytes