Malicious PDF — malware analysis report

Static analysis result for SHA-256 102a953b5d591f7e…

MALICIOUS

PDF

41.1 KB Created: 2020-07-09 04:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f8d69dc6acb989c0b5077b23a02cf98 SHA-1: 2ce03c1376bddd0e65c606f6207caeb38873749b SHA-256: 102a953b5d591f7e2151264720339daf6907e44acf407a6f49c2a0eb5bcc04aa
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or malware distribution campaign. The document body, though partially corrupted, includes the URL https://ttraff.cc/wb?keyword=vnsny%20referral%20form%20pdf, reinforcing the lure of a referral form to direct users to malicious sites.

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/wb?keyword=vnsny%20referral%20form%20pdf
    • http://files.exmouthcaninecentre.co.uk/uploads/1/3/0/8/130874128/jenasaj.pdf
    • http://files.rrtackstore.com/uploads/1/3/1/8/131871467/womage.pdf
    • http://files.lionofjudahfootball.org/uploads/1/3/1/4/131453248/3198120.pdf
    • http://files.santanhistorical.org/uploads/1/3/1/4/131406049/kexikulabidap-rezuvagov-kejevilam-vadubivelesisan.pdf
    • http://files.hlfmgoats.com/uploads/1/3/1/3/131383553/jopaxubesoz.pdf
    • http://files.ipponjudolondon.com/uploads/1/3/1/3/131379776/5c0897d6.pdf
    • http://files.counterfeitrapture.com/uploads/1/3/2/6/132681264/8287804.pdf
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.hlhas.com/uploads/1/3/1/4/131483550/wuvoxipepuzan.pdf
    • http://files.simplydivinesuds.com/uploads/1/3/1/4/131407812/23f3d849.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://robipini.files.wordpress.com/2020/07/pitoradari.pdf
    • https://molavoj.files.wordpress.com/2020/06/rikajunofuroselavaw.pdf
    • https://sesugimate.files.wordpress.com/2020/07/89849515867.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.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_off000063fc.bin
8067ca03fd859fc49a9dbe9eb0343568bfb8b7d38d02158ccf7c1b6431546723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 4912 bytes
font_01_sfnt_off00007497.bin
4948c5a17c1a86642f5c733fbabae3c8e0b9e3ca3287094029bc593d36a07f0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7497 10268 bytes

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