Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87094d207894914…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 23:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86c1871ac603d0a9ad76fc742b908f53 SHA-1: ecf52bb297fbd488d938f0e8e522b5d949552ddf SHA-256: e87094d207894914d19c850672df0e51f103e09a66e1ca0089a18c98c0b68274
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a lure related to 'Android phone version 4.1' and embeds numerous external links, including a critical redirector link to 'ttraff.ru'. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The presence of a callback lure heuristic further supports a phishing or tech-support scam pretext. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or persistence mechanisms.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=android+phone+version+4.+1
    • http://javazer.votebrizzi.com/uploads/1/3/1/3/131380550/zifibeforaf.pdf
    • http://ranixegos.thatonecouple.net/uploads/1/3/1/6/131606289/dawixojojilufis_ruduludo_xotuzodutoxasu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0728/5147/files/solimavevi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/alkylation_and_acylation.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/62617117366.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/81123882673.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/vired.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/61886161689.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/mining_waste_disposal_methods.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/38019375543.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/putuve.pdf
    • https://cdn.shopify.com/s/files/1/0437/8086/6209/files/kemorilolidamazufemamexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/canon_elph_180_user_manual.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_off0000656a.bin
c371cf9a63b4527624bbb726f830e3ac381a0c153c6fba8dd166f3dafd7b09bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 5024 bytes
font_01_sfnt_off0000768f.bin
861dd6688c288daddfba8296693f5026a5abcbf713266b5f5ce8543e7858239b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 10536 bytes

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