Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e60d46fea57314d…

MALICIOUS

PDF

47.1 KB Created: 2020-08-30 04:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c8827934f24d148e1a2eed3adc92ffd SHA-1: 314a7d4d053814e1bd490c8ab222da2ceca1e9f0 SHA-256: 2e60d46fea57314d4efcf74de538c7378367a7d9f0f313b5b93a8a8fb1ac9458
152 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=ccleaner+technician+edition+vs+professional, which is the main indicator of malicious intent. The presence of numerous Shopify-hosted PDF links suggests an attempt to manipulate search engine results or distribute malicious content through a seemingly benign platform. No scripts were extracted from this sample.

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/wix?keyword=ccleaner+technician+edition+vs+professional
    • https://cdn.shopify.com/s/files/1/0429/6648/3103/files/balodilozajipifekevejuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/80530661966.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/35738186427.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/kokepajorevimegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/sobisamexugawi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/37826422894.pdf
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/goletet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/fofixukozuwejewim.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/xumetefafuvebumewireka.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/51698783336.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/pdf_in_word_online_gratis_umwandeln.pdf
    • https://cdn.shopify.com/s/files/1/0433/2978/1918/files/89661989008.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/anuria_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/accordion_music_download.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_off00007979.bin
945c4b5b972d113371afb0433dac7ee8c366d31dabb775110a2b8a99c268c1c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7979 5208 bytes
font_01_sfnt_off00008b21.bin
76126fac34567ee1b84b2c4545559875351eefb79f3d07ebe34987ea2c780185
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B21 10520 bytes