Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cace895dec50c7…

MALICIOUS

PDF

48.0 KB Created: 2020-07-30 13:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b111424c321e067a786acdd84794bb1 SHA-1: a8689c1f1270efd6507534710d130866d1ef36ac SHA-256: 84cace895dec50c77c0287d01c2b8b999c7f1e99f77ae9728e670030c5ac54e6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector service, which in turn leads to a large number of other PDF files hosted on Shopify and other domains. This indicates a link farm or redirection scheme designed to obscure the ultimate destination or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=arc+length+of+a+circle+pdf
    • http://files.myrawilliamsottewell.com/uploads/1/3/2/6/132682168/653f1b112df.pdf
    • http://files.hcsatl.com/uploads/1/3/2/7/132740541/xubudelexewuverovuf.pdf
    • http://files.lewiswalsh.net/uploads/1/3/2/6/132682230/xovogo_wibejif_kupila_sonemivurukejo.pdf
    • http://files.gartonmillermedia.com/uploads/1/3/0/8/130813111/pifanifafija.pdf
    • http://files.faithbaptistkaufman.com/uploads/1/3/1/4/131406684/gapenipiwofufo_jekalobidulopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2865/9880/files/17992824690.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/buvune.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/risarafovetobowigexij.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/98859621902.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15636630427.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/63226468253.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/25894846425.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/nekalusitove.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/28474098526.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/69652424046.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/19919525920.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fb8.bin
c6017a6d86a855746cc3374208884d3bb344ce5192612ec9a4311c37ea481331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB8 2908 bytes
font_01_sfnt_off00006a1b.bin
af9d215fe0829c74d438f0cd14c53d6cbe78748969612da335cdf151389b3594		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1B 5016 bytes
font_02_sfnt_off00007b16.bin
3d47eace15c72ec3b7acd3511ccd9d40f38ff7beed46e4c0192e64249134f52b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B16 10004 bytes
font_03_sfnt_off00009d89.bin
77905ff9885e60cfff17cf33ad9da418757c231635603c6b4cc239c84c233917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D89 16064 bytes

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