Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db4cc873395250b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 05:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c8dae5de7087e7d6ab75a5fa63a0224 SHA-1: 913659dd6c33f376bba757a66cdd7a2462777414 SHA-256: 5db4cc873395250b69cb761a26ce71314838fd3012f81d5314cbcb110225e99b
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a search result for 'Aditya hrudayam lyrics in tamil pdf'. The PDF also contains a large number of external links, many of which point to benign Shopify domains, but some point to unknown domains that could host further malicious content. The ML classifier 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.ru/pify?keyword=aditya+hrudayam+lyrics+in+tamil+pdf
    • http://files.myptsdveteran.com/uploads/1/3/1/3/131398360/4ece218d.pdf
    • http://files.kishonnagray.com/uploads/1/3/1/0/131070144/kivotivuwupi-vatuxugo-jozij-vevobolod.pdf
    • http://files.feeliingthehealing.com/uploads/1/3/0/9/130969764/vafotuxamuximofami.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/fundamentals_of_applied_electromagnetics_ulaby.pdf
    • https://cdn.shopify.com/s/files/1/0438/7989/1099/files/gagiroloba.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/pamuzenezukegolufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/douglas_adams.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/48020383921.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/jitadajezikopimugebigar.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/56919434271.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/sufanugafaluvade.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/tamugesotajinovetakunave.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007408.bin
305f9343c688b6a47fac9ce215fc0c3f8b6d82ec3862f308aae21ee9f99b5a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7408 5484 bytes
font_01_sfnt_off0000868c.bin
f46e6372de50a2cbde1f8bdabbbab189751cb3bd88e87a1552b81ba7dbba52c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868C 2140 bytes
font_02_sfnt_off00008fff.bin
339a6ac8d101d768293793eea9042cc40df6e091c6cf44335914617f86ccdd42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFF 10856 bytes

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