Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eaec60675807315…

MALICIOUS

PDF

40.5 KB Created: 2020-08-07 07:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a109b4c23e9756f3d7f24f562a19cb66 SHA-1: 01724e2fede7501d27623bc94f218ee2788a113f SHA-256: 3eaec60675807315f9ef79a998f4fddcf8aee0bfe5926c6f2674c33e4ff8b7c6
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded URL 'https://ttraff.cc/pify?keyword=maladaptive+behaviors+pdf' is a known malicious redirector. The document body contains obfuscated text and the URL, suggesting a lure to external malicious content.

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=maladaptive+behaviors+pdf
    • http://files.carolinashowcasebaseball.com/uploads/1/3/0/7/130739343/595403.pdf
    • http://bibapupag.msculhane.com/uploads/1/3/1/6/131606490/2597715.pdf
    • http://files.raegansreserve.com/uploads/1/3/2/8/132814136/givixa.pdf
    • http://files.disciplescience.com/uploads/1/3/0/9/130969580/nutusogos_batapuw_bixovavaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/mizabutilolotud.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/dafadalerupumare.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/7958430835.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdf
    • https://cdn.shopify.com/s/files/1/0431/5571/8298/files/53492060386.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/soxewovima.pdf
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/43721956737.pdf
    • https://cdn.shopify.com/s/files/1/0438/9535/7595/files/gmp_training_material.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6074/files/mavowexiwikitejenivotoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/kedab.pdf
    • https://cdn.shopify.com/s/files/1/0437/8175/0941/files/nasironapiwewofufov.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_off000062b8.bin
72c7cc7fa1c29f9676883cf10f154accf314b5e616b28c2395a607adfe3a4c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 5336 bytes
font_01_sfnt_off000074dc.bin
72e4ea9a4fcbd9ee48a90a84a335b63b2651b1ec651e669c0a3fedf4d38a7032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DC 9528 bytes

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