Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e896ceb6db7b19…

MALICIOUS

PDF

47.6 KB Created: 2020-09-11 01:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86410164bb52186ff77745bf48f1afbd SHA-1: 04ceac8ea33375462b8be5b1adfbb2ce1d2df52a SHA-256: 70e896ceb6db7b19d3005d95beb74452b1dd20e9670572f6da877aad7cf64004
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search results or direct users to malicious content. No scripts were extracted, but the overall structure points to a link-based attack, likely for phishing or malware distribution.

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.me/wix?keyword=chomp+sms+pro+apk+free
    • http://files.quantumology.net/uploads/1/3/1/6/131606113/vedovototuwepi_bewabozebu.pdf
    • http://files.herecomesthyguide.com/uploads/1/3/1/4/131453022/eaebc6b.pdf
    • http://visile.kgreigcpa.com/uploads/1/3/1/4/131438216/5924633.pdf
    • http://zivizipar.fromplaygroundstopurpose.com/uploads/1/3/1/1/131164159/3923841.pdf
    • http://files.gaindetalks.com/uploads/1/3/0/8/130874629/dojoja-kefuzegomoli-wadab.pdf
    • http://pivenon.aimuniversitycolorado.org/uploads/1/3/1/3/131383613/a5a0b73915d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/3e5db3_fe2c289dc30146eb8bf6dff1ec84d414.pdf
    • https://static.usrfiles.com/ugd/510691_6f8c07353c894fbcb4e8c0ffb519fbd6.pdf
    • https://static.usrfiles.com/ugd/9e14ca_b8a3a5f7d13e403389d3e69fbaec42d8.pdf
    • https://static.usrfiles.com/ugd/607883_a6c60777ec034501bf36ea3a2cf5f75b.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/nitererikefop.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/nonconformity_quotes_in_self_reliance.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/vlc_video_player_free_for_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c6.bin
554ceae9c481d59b2e1cf06f142b6e448b4bd9715e951fbf7d570a3b05d8621d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 5076 bytes
font_01_sfnt_off000072d5.bin
7481f5d9ffb3a6514ce99ccdaeeedf875f763b69a14e875341965c4bcc8dd285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D5 12748 bytes
font_02_sfnt_off00009bef.bin
3f9b7ffe8b05e759e6ab88eadc3a2ae9fecb968563d9c65bfe15d63969403378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEF 16240 bytes

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