Malicious PDF — malware analysis report

Static analysis result for SHA-256 509205236da288dd…

MALICIOUS

PDF

36.3 KB Created: 2020-08-22 15:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1843a6a376699d13f2b8f1af02fb9efc SHA-1: 265c639d9d63015f42c50247c7c5743ad558f1f5 SHA-256: 509205236da288ddb0e8a6a7a799f63c25fbabbf93a2f17f2aac15654affa684
152 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'snakes and ladders board game blank template' and embeds multiple links. One critical heuristic indicates the PDF links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=snakes+and+ladders+board+game+blank+template. While many other links point to Shopify, the presence of the malicious redirector and the ML classifier's high confidence score suggest a malicious intent to redirect users to harmful content.

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=snakes+and+ladders+board+game+blank+template
    • http://files.thebackpew.com/uploads/1/3/2/3/132302833/7205142.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8340/files/lowes_rochester_mn.pdf
    • https://cdn.shopify.com/s/files/1/0449/4671/8879/files/marketing_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/rajakemokuzabotejilokibi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6117/files/class_actinopterygii.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/nasawafagorawefijetakaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/exercise_plan_for_weight_loss.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wefijovapofuvixovotimeta.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1205/files/86539614643.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_off00004e1b.bin
c54120f2162a4c80a5153e62ad1d99440479209baa307699de381eeabe0638ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1B 5588 bytes
font_01_sfnt_off000060f7.bin
7f0f71d1b38d82525237460e9fdf39bc4242dbd2488385725cef07419e34dd96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F7 10416 bytes

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