Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf27062fe0ffd943…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 22:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3abc885ac2d90164bd5af66360c179d SHA-1: 3fcade543b5bf20736d5ca50d2273be5dbd228b3 SHA-256: bf27062fe0ffd9430168b47d24f28486e67a3be7b8ac7f2bed5d7723cb0ae960
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm behavior, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be redirecting the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=shine+on+crazy+diamond+tab+pdf
    • http://files.illinoiscardinalsbaseball.com/uploads/1/3/1/4/131438348/069356a21572.pdf
    • http://files.bcrenergygroup.org/uploads/1/3/2/8/132814138/2304570.pdf
    • http://files.spotlightmusicaltheatre.com/uploads/1/3/1/1/131164211/vaxigafibi-jebid.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/funemojakudawuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/polyester_capacitor_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/75655894998.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0589/files/jujunobuvaxaze.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/everything_pachislo_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40323832667.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/13529147702.pdf
    • https://cdn.shopify.com/s/files/1/0447/8110/9405/files/arthur_conan_doyle_short_stories.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/visatutasijunokuzos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9931/5619/files/tibumutonopobuwujimijud.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/jepurupasuzetitaronowapen.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f6.bin
572ed3106a5ecc3af4040f025ad3238d28f69193c354f3e7d65976a3051e10e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F6 5580 bytes
font_01_sfnt_off000076d9.bin
ed7413085d5e68d7483feca480d2aa0303c5a87cfe9071a7510c7cd6cd041777		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D9 12148 bytes

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