Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb473b486b42b5c…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 03:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 985e44fe8cb1b5f904c1465568740e41 SHA-1: 0222f3b2da50d171f9e12843fbbe4a48d7a24e0f SHA-256: dfb473b486b42b5c374c390ccbba46f5eb5c27043e9720bad2c46936211fc0bc
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=android+oyun+club+minecraft+11.+0'. The document body, though heavily obfuscated, also contains this URL and appears to be a link farm, with many embedded URLs pointing to Shopify. This suggests a phishing or scam attempt using a lure related to Minecraft. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=android+oyun+club+minecraft+11.+0
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/32136554647.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/74968402346.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/psy_gentleman_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0447/9824/7069/files/suffixes_able_and_ible_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0462/4374/1845/files/army_of_darkness_defense_ios.pdf
    • https://cdn.shopify.com/s/files/1/0438/4558/3013/files/33140012076.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/zitizuvoxufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/32129138548.pdf
    • https://cdn.shopify.com/s/files/1/0433/6048/5541/files/magube.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/26734669079.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/gagenujokowutumelizuzefur.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/dobivasimagut.pdf
    • https://cdn.shopify.com/s/files/1/0433/2604/6362/files/guidepost_solutions_reviews.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_off0000601e.bin
c506d0ee43dfeacd32026e7dd918355b064322e3f924eebf314731cd4e89bf3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601E 5448 bytes
font_01_sfnt_off00007291.bin
aad8e8ff883e94891cd2dd3b95fa63452b4a53d2c12e8daa6f130c7d5674a5c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 9820 bytes

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