Malicious PDF — malware analysis report

Static analysis result for SHA-256 44012993a867e962…

MALICIOUS

PDF

35.1 KB Created: 2020-08-08 14:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f32649e733ad2069cbd532e46f21c9 SHA-1: 6eed7cb78cb431a0d966ce26d8638435dc6a804a SHA-256: 44012993a867e962c07e6aeb0d4457a53abe1f8c66c25971990f890532942661
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 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'almost is never enough piano sheet music pdf free' and the malicious URL itself. This suggests a social engineering lure to drive traffic to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=almost+is+never+enough+piano+sheet+music+pdf+free
    • http://files.donnamilburnphotography.com/uploads/1/3/0/7/130776499/9650b30cd4.pdf
    • http://fivuzaf.milanitroutcottages.com/uploads/1/3/1/3/131379732/kokis.pdf
    • http://files.andysdigitalspace.com/uploads/1/3/2/7/132710772/zikejunipupirus_sotosiluta.pdf
    • https://cdn.shopify.com/s/files/1/0447/8858/0512/files/placement_test_alliance_francaise.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/32194783851.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/girawojepanolujinuravosoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/islamic_bayan_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/3119416214.pdf
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/xuwepufalumenibom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1519/files/neverwinter_class_guides.pdf
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/kakumusonebogafepu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/zolononiwemuzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6681/files/simekixonirene.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/kifukelisinopef.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/59863615631.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_off00004a94.bin
cdf8ce6597fd9af09905264f67ec71658a8c2813497b97569273c49ca98a6bd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A94 5620 bytes
font_01_sfnt_off00005d88.bin
fd6c72e7d69858388bd8552eb5d9c7fd5d0c041d78e6ddea341d7c0907a19109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D88 9852 bytes

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