Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afe9a5d3a09e15a…

MALICIOUS

PDF

48.6 KB Created: 2020-07-30 02:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e37135de10dd3644f3d43b2b22654f8 SHA-1: 6d37b7899ea8cb4c306924efdcc8e21540583c54 SHA-256: 7afe9a5d3a09e15ae6eb657029833726174d584d74b3946ad5176a52a997f824
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by an ML classifier and contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs. One critical heuristic identified a link to known malicious redirector infrastructure (https://ttraff.cc/pify?keyword=alcalosis+metabolica+causas+pdf), indicating a likely attempt to funnel users to harmful content. The document body is heavily obfuscated and appears to be generated content, further supporting a malicious intent rather than legitimate document sharing.

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.cc/pify?keyword=alcalosis+metabolica+causas+pdf
    • http://files.simleybasketball.com/uploads/1/3/0/8/130873908/talobexabodi.pdf
    • http://files.lettucelearn.org/uploads/1/3/0/8/130873875/wurop-vigiv-dogunujubo-pinigu.pdf
    • http://files.stickemupracks.ca/uploads/1/3/1/1/131163867/gotunugodise_dubewawaloxav.pdf
    • http://files.asthewoodturnzne.net/uploads/1/3/2/6/132695445/f325895ce31b6e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/zowivani.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7599/files/nakuwuxex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/26527256092.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/naganivobenumevatalil.pdf
    • https://cdn.shopify.com/s/files/1/0429/3672/9766/files/xabivisapetemozikemabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/85934341492.pdf
    • https://cdn.shopify.com/s/files/1/0428/6893/2767/files/moromukawuxuve.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/rebovenuwav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53551688275.pdf
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/puzapijeralivomemupit.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/48538977134.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/64050445936.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e15.bin
0341ce3a9c98ac364faf5174ae74dcf957ed65353fe37941d581b85661cb7ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E15 5108 bytes
font_01_sfnt_off00008f70.bin
6431714b5c6e094a90761e8097c5747a657a01ed6b9fd9d621d6fc00b0b57bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F70 11096 bytes

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