Malicious PDF — malware analysis report

Static analysis result for SHA-256 0057ffccb207c47f…

MALICIOUS

PDF

56.4 KB Created: 2020-08-08 01:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b9230b647a9487d644bed765f3e55c4 SHA-1: 1ab38226da9d6a500b22de21e92f9db2f231b7a7 SHA-256: 0057ffccb207c47f802771d95f44f854905916121845a87491b15c5b66ee8288
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=calidad+total+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, one of which is 'https://cdn.shopify.com/s/files/1/0432/5762/6792/files/10903029985.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL.

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=calidad+total+pdf
    • http://files.annartisticlee.net/uploads/1/3/0/8/130813988/1617800.pdf
    • http://files.dalestourism.com/uploads/1/3/1/3/131383681/fuwibakeniridulogav.pdf
    • http://files.wildflowerlab.com/uploads/1/3/1/4/131437889/videmugidumu_jifisigus.pdf
    • http://actualid
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/10903029985.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/15564690360.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6820/files/jadudopikozekoguwul.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6256/files/zijum.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/botavizukuwobaworegaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/tajidodepowixidedi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/akuntansi_keuangan_lanjutan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegofegomena.pdf
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/11245737289.pdf
    • https://cdn.shopify.com/s/files/1/0434/5954/3192/files/bisawekoxufofituwexagegul.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/89794406319.pdf
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/vivapudero.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_off000094d6.bin
2f69c25134bbf09c5210e2748de81c06fac10b767deadb123dd1752f7473e878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D6 4348 bytes
font_01_sfnt_off0000a3a6.bin
4aa1a4be64dc1e3e843604c8dc6dd5ce71ba5a95a2b2ef3a73146ab707670c0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A6 10268 bytes
font_02_sfnt_off0000c64c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC64C 4324 bytes

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