Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa045c89b5873a5f…

MALICIOUS

PDF

39.6 KB Created: 2020-03-07 19:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c391d347f9c98b2dbb29ab83ced683d6 SHA-1: a7c0414e9d4bd72021eecd1446ddb958d3aa490e SHA-256: aa045c89b5873a5f390f4d245afaf5fb972c2ddc1b9bda7b6bb7c37acfa07bdc
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm. The document body, though partially corrupted, contains references to 'Gta 5 cheat book download pc' and includes numerous URLs pointing to PDF files. This suggests a social engineering tactic to trick users into downloading potentially malicious content disguised as a cheat book. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://mx.grandsalinelibrary.com/uploads/1/3/0/7/130739194/130739194.html#gta+5+cheat+book+download+pc
    • http://moodieshop.com/uploads/1/3/0/5/130545753/5390602.pdf
    • http://www.atlantacenterforhypnotherapy.com/uploads/1/3/0/7/130776502/rosevodisogovujuj.pdf
    • http://mosaico.ch/uploads/1/3/0/7/130776021/2330262.pdf
    • http://officialpost.org/uploads/1/3/0/7/130775758/vesesubifubitoji.pdf
    • http://superiorfinishconcrete.com/uploads/1/3/0/7/130739878/e85fb5c6faf659f.pdf
    • http://www.missholleyskitchen.com/uploads/1/3/0/7/130776481/d2a59dbb46c0.pdf
    • http://www.brandonlovesraechel.com/uploads/1/3/0/4/130488811/bezamudop.pdf
    • http://financeboilers.co.uk/uploads/1/3/0/7/130739778/tojovipugekujezenoz.pdf
    • http://t-and-js-lawn-care.com/uploads/1/3/0/6/130639397/sosasomulij-degexi-vimujoxotadilol.pdf
    • http://chavimonheit.com/uploads/1/3/0/7/130776082/5f3220196c.pdf
    • http://hyunsookimmedia.com/uploads/1/3/0/4/130488181/dd9986fdd439929.pdf
    • http://southwestdurham.com/uploads/1/3/0/2/130287898/pefavilubalagegub.pdf
    • http://www.leemingdynasty.com/uploads/1/3/0/8/130873830/7571870.pdf
    • http://barebeautypdx.com/uploads/1/3/0/7/130738988/wekuvob-mopabidejujiju-kuguzajop-xevulinukeweg.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743e.bin
5369e17a68b3fef24228f66ff104f0971a645da685cc712a271914b879244a60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743E 7460 bytes

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