Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bccc92d49ba2ff…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 19:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f9725b99dae06af2f68b5bb5fe9720 SHA-1: e81fa4b1395389b194fc1f7a7c4c272c41202a4b SHA-256: 43bccc92d49ba2ffb87615a4a650dd1029a5a83039597f11935ba8888a20b968
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.ru`. This suggests the document is designed as a link farm to distribute traffic to malicious sites. The document body text is obfuscated and contains the malicious URL, further reinforcing the lure.

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=alice+miller+for+your+own+good+pdf
    • http://files.audaciousmonkey.com/uploads/1/3/1/4/131483128/8cc41aa33f7b343.pdf
    • http://files.grecianmarket.com/uploads/1/3/0/8/130874489/gopixitijux-xarusunilopa.pdf
    • http://files.texasstaycations.com/uploads/1/3/2/6/132681556/neforike.pdf
    • http://files.mrhaughaboo.com/uploads/1/3/1/3/131383743/9477547.pdf
    • http://files.cyrenawellbeing.com/uploads/1/3/0/7/130776326/tirevize.pdf
    • https://cdn.shopify.com/s/files/1/0439/1459/2408/files/rabuzamolopufinuvewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2992/1943/files/badidajetolez.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/nutorilep.pdf
    • https://cdn.shopify.com/s/files/1/0435/0027/3830/files/xizowufonelovosadit.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/94791365306.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26450283228.pdf
    • https://cdn.shopify.com/s/files/1/0433/7002/1014/files/18386093212.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/54628837834.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/jurenesetuliximudixupit.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/955589589.pdf
    • https://cdn.shopify.com/s/files/1/0431/4234/8949/files/32289364243.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/jajirajabude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/zotujovewugaz.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_off00006985.bin
75ec1f1bf8fb12b390f67e602f77eda9ac005161163153bdd64e6b8acbe784ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5272 bytes
font_01_sfnt_off00007b7b.bin
ac8ca3ff7b12c8d55fd7d65d2751559b91ffc4cd46bd3808beb0e65a03d02035
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7B 10352 bytes