Malicious PDF — malware analysis report

Static analysis result for SHA-256 3153792189147108…

MALICIOUS

PDF

49.8 KB Created: 2020-08-18 17:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 443d1ca5720a8d5a7efdce6fe5e6fb4d SHA-1: c4314fa4dffb3b6546c1603d56a2b6234e154ce8 SHA-256: 31537921891471082fe66cf0dea4689a8fb9296d69cda78b50f1b412dd824fc2
128 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, disguised as a commercial invoice. The document body contains a URL that leads to a redirector, which is likely intended to deliver a second-stage payload. The presence of numerous external links, many hosted on Shopify, suggests a broad phishing or malware distribution campaign.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=commercial+invoice+template+nz
    • http://kadis.apollonasglykas.com/uploads/1/3/1/4/131452883/2032805.pdf
    • http://files.mariaapostolopoulou.com/uploads/1/3/1/3/131384121/6770110.pdf
    • http://nuvovuvow.stjohnsuccbrighton.com/uploads/1/3/2/6/132681862/serubadi-gimavut-webotubukebojuk-nojasu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/fawizubojaxuzupom.pdf
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/58178798868.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/60392708779.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/bseb_10th_result_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/89210964364.pdf
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/kozefavali.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/19922874993.pdf
    • https://cdn.shopify.com/s/files/1/0428/3455/9143/files/la_evaluacion_en_el_aprendizaje_cooperativo_johnson.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/74549268945.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/ayushman_yojana_trust_online_form.pdf
    • https://cdn.shopify.com/s/files/1/0446/6999/3123/files/45832095829.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000781a.bin
f3c20c235240edb8dc7994ac3c64af43d0331bc0e8b06f64a33196fc0f357a07
pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 4824 bytes
font_01_sfnt_off00008864.bin
174c0a2f71494e5de643d5644fb8b45b286b36f1698fc2c76461057a847102ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x8864 10464 bytes
font_02_sfnt_off0000ac19.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC19 4324 bytes