Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62ef81462659843…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 08:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38afd54f94c2a928b77ae68dad2c55eb SHA-1: e40b7a42377aaef100a28da3ce4cd72d04bda289 SHA-256: b62ef8146265984358b15634e667b09b7890270abf0eb2237993ce3544008093
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector. The document body also contains the text 'Javascript force download file' and the URL 'https://ttraff.com/pify?keyword=javascript+force+download+file', indicating an attempt to trick the user into downloading a malicious file. The presence of numerous other PDF links suggests a link farm for SEO poisoning or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=javascript+force+download+file
    • http://files.wildcatsyouthwrestling.com/uploads/1/3/1/4/131453823/36d7bd7d6fb5a0.pdf
    • http://files.medium-shelleyjones.com/uploads/1/3/0/7/130775786/79db0331.pdf
    • http://files.buildlikeabird.com/uploads/1/3/1/0/131070618/ruwefu_xuxozonapixor_vuvipede.pdf
    • http://files.mareehughesart.com/uploads/1/3/1/4/131406337/b92a8f201e201c4.pdf
    • http://files.stephanieheger.com/uploads/1/3/0/8/130814687/bilemuvu-gipovik-befozorakono.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/fufibipijiporituw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9209/8726/files/12792764653.pdf
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/xiresorabuxetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/husqvarna_460_rancher_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7845/8275/files/4868592787.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kavawodotogebefijoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/66176813414.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/furekulisinejabebobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/2134835119.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/guxalofonefupuziti.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/50922864647.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/rodafefirinejew.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_off00006985.bin
94e9d537e86d911351d12b9308fe6626a32246db566e7f9e7ebe48f253cbe089		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5292 bytes
font_01_sfnt_off00007bb3.bin
aecef8ea729df14910dc8634abd3d638df2ffc5c37a510d541b4bf0ecb040606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB3 10468 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.