Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8440df625c018f…

MALICIOUS

PDF

48.9 KB Created: 2020-08-17 00:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d3124cb23aef8844ec76f88be588dc9 SHA-1: 46af9d1576eba805b20288f72b94009aecacabd1 SHA-256: 2d8440df625c018f1d141b7432e39d703cf39ba8824be3dc70549f565fe2d571
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'guide'. The presence of a malicious redirector and a link farm indicates an attempt to direct users to potentially harmful content, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.com/pify?keyword=dire+maul+dungeon+guide+classic
    • http://tidusesun.amfa4interfaith.com/uploads/1/3/0/9/130969061/luponawaluj-xekalazoresa-jotunad.pdf
    • http://xirafup.mcgraththerapy.com/uploads/1/3/2/3/132302720/0ab95b3.pdf
    • http://lovisex.lechicacademy.com/uploads/1/3/2/8/132814930/6629424.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/mobile_plans_microsoft.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/6032644062.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/23865787197.pdf
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/3_audio_songs_tamil_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/29216964885.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/51050453880.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8921/files/98455938374.pdf
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/no_one_alicia_keys_chords.pdf
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/point_click_care_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/seririjotut.pdf
    • https://cdn.shopify.com/s/files/1/0441/2715/8424/files/data_structure_and_algorithm_in_java_tutorial.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_off000082a7.bin
f1f6e6a65605c0775c52f313c3be6086a874f0c4fcd72373a0cac5f0dc7e3dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A7 5260 bytes
font_01_sfnt_off00009468.bin
0088890f85274eb1426d8ebd3de70249821a963d3730d5f202fd487a08d0532c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9468 10128 bytes

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