Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbbb214d4f052df0…

MALICIOUS

PDF

53.5 KB Created: 2020-08-21 22:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6d7fd6e7eecce0771c60154f6b4b6ad SHA-1: b6113cecdfe13baf0465db018ca2105130d8b113 SHA-256: cbbb214d4f052df084ee7f3a35e4c0322861f337c1869a225655b64f01581d10
160 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a PDF link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=how+to+use+router+template+guide+video'. The document also includes a heuristic indicating it's a password-protected archive lure, suggesting it's designed to trick the user into downloading a password-protected file, likely to bypass gateway security. The presence of numerous links and the redirector URL strongly suggest a phishing or credential harvesting attempt.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=how+to+use+router+template+guide+video
    • http://sogomenal.kcoafootball.com/uploads/1/3/0/8/130814515/nexanebisux_daramukozenop_livuvot.pdf
    • http://files.msbrodysclass.org/uploads/1/3/1/3/131379732/3700895.pdf
    • http://files.edhgs.com/uploads/1/3/1/4/131408529/lujaremokike_nezuki_derunelizaxeti_kelabij.pdf
    • http://lasod.evergreencookiecompany.com/uploads/1/3/0/7/130776088/woragerugizefaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/nokia_android_10_update_roadmap.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/modal_verbs_advanced_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/saxavubo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/vuvedamefujerizapidemi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/witosekorogotepe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vadubojawijimelibisipani.pdf
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/9765586124.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/60658378016.pdf
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/mumesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/xunokedomapunigezuxabuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/79157206586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63491738983.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/vowekafalowirediniduxur.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_off00009395.bin
0a734eb774d221d5b90a94999e174293ac078b6b62101a77cf59e7232c10735a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9395 5392 bytes
font_01_sfnt_off0000a5e9.bin
a7dfa2ba058bfb00570fad3a189bf67ee00232cdd58aeaa6605b31ff256fe456
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E9 10036 bytes