Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7429c8ae66085a…

MALICIOUS

PDF

44.0 KB Created: 2020-09-22 04:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 932222add0f6f7a2c8b959701fa5df2a SHA-1: bcd95e39a3eca89fa3de5b31d58d393068786e66 SHA-256: 3a7429c8ae66085a716bfa7ae194605e95f710307e95568acca6e101eee28f71
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link, 'https://ttraff.club/wix?keyword=mercedes+benz+c+class+service+manual', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious websites, likely for phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.club/wix?keyword=mercedes+benz+c+class+service+manual
    • http://lopadaz.zaclavender.com/uploads/1/3/1/4/131453005/dbb00450.pdf
    • http://files.cherylkeenknowlton.com/uploads/1/3/0/8/130813715/vanowakimuxasifudeza.pdf
    • http://files.mariangelaalhanati.com/uploads/1/3/1/3/131379552/gobakepixak.pdf
    • http://vakonow.doublejoutfittersny.com/uploads/1/3/1/6/131606271/2717341.pdf
    • http://getosa.wekeepyoumotivated.com/uploads/1/3/0/7/130739287/6037708.pdf
    • https://cdn.shopify.com/s/files/1/0484/6895/1190/files/free_ringback_tones_for_boost_mobile_phones.pdf
    • https://cdn.shopify.com/s/files/1/0432/1257/0783/files/alternaria_solani_en_papa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wijabogose.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/3705696.pdf
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/que_es_carga_elctrica.pdf
    • https://cdn.shopify.com/s/files/1/0434/5747/8823/files/44628758461.pdf
    • https://cdn.shopify.com/s/files/1/0462/3056/9109/files/94724236227.pdf
    • https://e54806ed-1f26-49d7-84ce-fd00a479343d.filesusr.com/ugd/fac845_001251b288f745aeb9026cf690436f06.pdf?index=true
    • https://87de744e-6b3e-4c30-8c12-25c73ce33de1.filesusr.com/ugd/16a96a_8c127679eac8460e9fa28622bc469fa3.pdf?index=true
    • https://561b87a4-6442-4701-b04b-173819b82ff4.filesusr.com/ugd/87fdc7_dc85a97912af4d6abe20f388adc0b792.pdf?index=true
    • https://8f77fa2b-722d-4318-8d39-5683f94d479d.filesusr.com/ugd/03f576_620103050fc146e8abb18c8b65149125.pdf?index=true
    • 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_off00006bff.bin
f811b2385395b04fb82c52b1703a5316b77455db1769dc689dd835157c8e4f38
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFF 5340 bytes
font_01_sfnt_off00007e2c.bin
437c5ec3f073df7c7355a719548de959fa8f781df9d25df49594949a7101ab98
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 10764 bytes