Malicious PDF — malware analysis report

Static analysis result for SHA-256 45637cca34df4110…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 00:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4230e778bae29d150c313ba2be827bb7 SHA-1: 5eeeb69dc91a80ab553bb0cdadd0d3977a461748 SHA-256: 45637cca34df41105e73499fa8001c2d3e1f7bade426931eb572af1586e3968b
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though corrupted, contains text related to 'animation software adobe flash free' and includes the malicious redirector URL. The presence of a visual download button lure further supports the malicious intent. The primary malicious URL is ttraff.ru, which is used to redirect users to other potentially harmful sites.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=animation+software+adobe+flash+free
    • http://files.bradleyelementary.com/uploads/1/3/1/0/131070867/mopededowoviwumama.pdf
    • http://files.midwestnettingsolutions.com/uploads/1/3/1/0/131070398/jovibososazekajagata.pdf
    • http://files.chaoclimbing.com/uploads/1/3/1/0/131070566/vopinovuj-ruwiputa-turokuve.pdf
    • http://files.sergedesroches.com/uploads/1/3/1/3/131380094/gazetanalonega.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/briggs_and_stratton_repair_manual_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/lowes_orange_city.pdf
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/shannon_s_diversity_index.pdf
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/53445252412.pdf
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/tezotexusunawosonogore.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/81894299546.pdf
    • https://cdn.shopify.com/s/files/1/0443/9392/2726/files/edit_document_text_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/linuvosixifaba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/gejulikojiwugekiputafi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/ruzuxamepupazumifowumuvan.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_off000060f8.bin
7724cb6649b48c518ea81701046fac550ead9da5a46a1b1595cd01582be2c8bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 5368 bytes
font_01_sfnt_off0000730e.bin
8b2fe60387952b07b6b140212751fef08a703caf56959f2f0e51424043a230ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x730E 10120 bytes