Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85823f1e7300dce…

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 23:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b5e88e6fcffe81e75395de15d4cd03c SHA-1: 8fd1f6eb034763d35a537721e95502bddd5728d5 SHA-256: e85823f1e7300dce1a37d49998d17754793f60a4a4cff3876c8de860579991d7
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL. The presence of a callback lure heuristic suggests a potential phishing or scam attempt, aiming to trick the user into interacting with the malicious link.

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/wb?keyword=2018%20civic%20coupe%20ex-t%20manual
    • http://bekeb.seamonkey.com.my/uploads/1/3/0/8/130813612/933918.pdf
    • http://padexu.totaltravelsystem.com/uploads/1/3/0/8/130814328/vimugudaxejovo.pdf
    • http://files.scotiansup.com/uploads/1/3/2/7/132740965/949dea7c1debc10.pdf
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdf
    • http://files.baslerchiro.com/uploads/1/3/0/7/130738970/9533277.pdf
    • https://cdn.shopify.com/s/files/1/0437/9652/9314/files/manualidades_con_reciclaje.pdf
    • https://cdn.shopify.com/s/files/1/0436/4497/7305/files/the_coming_revolution_capitalism_in_the_21st_century.pdf
    • https://cdn.shopify.com/s/files/1/0435/4975/3507/files/74555596480.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/3579571236.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/marathi_calligraphy_letters.pdf
    • https://cdn.shopify.com/s/files/1/0431/4854/2109/files/sunax.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/23932132778.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/finajonajek.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/latoxuwasosuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/javisisileto.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_off00006f0b.bin
01e89046eaf33421950b026642adc1c74419c4f18b0377dc3851e937f6a8cb3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0B 5388 bytes
font_01_sfnt_off00008159.bin
97fb959f9974db75491ff5a6307f70c6f36d738c1d476732322168d71a9a7a75
pdf-font-stream PDF embedded font (sfnt) at offset 0x8159 10948 bytes