Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39732dda78b811e…

MALICIOUS

PDF

50.2 KB Created: 2020-08-20 06:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b63a9093a00a2191092abf14e135621 SHA-1: e227feafe069563ac43ccf1557a40733ad1755ba SHA-256: b39732dda78b811e8971d4829b2e1bb76870037947352cf55d81a2207693d876
120 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 file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure for a 'video player for Windows XP'. This indicates a phishing or social engineering attack. The PDF also exhibits characteristics of an SEO link farm, with numerous links to other PDFs hosted on platforms like Shopify, likely to improve search engine ranking and distribute malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.

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.com/pify?keyword=video+player+for+windows+xp
    • http://durur.scholarlyedits.com/uploads/1/3/2/8/132815176/4151769.pdf
    • http://files.mbrilliantbody.com/uploads/1/3/0/7/130740624/5018101.pdf
    • http://files.nicolebrauchart.com/uploads/1/3/2/7/132740580/39eb14.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/jetin.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/molecular_mechanism_of_cell_differentiation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/laporikasojege.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/nulego.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/vazukawotegegazanesib.pdf
    • https://cdn.shopify.com/s/files/1/0447/7501/4566/files/dissection_carotide.pdf
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/rikadazukezudamozigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/76049982193.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/vudakajomazegadamekaz.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d62.bin
73557fd4b9a2faa9f31fa694fff4ee7b49963c6428b4887cd33583d0d4a3c7ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D62 3068 bytes
font_01_sfnt_off00006827.bin
d9a9f29764deae3398f035bf4fb2f3da50593658527fcbbe85ef679f4955e2f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 5264 bytes
font_02_sfnt_off00007a30.bin
0e048cbfb5b0e144552c809ac470df0b8331e5e115dd41b31fe30012324b565e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A30 2120 bytes
font_03_sfnt_off000083e6.bin
da86ab73247b174eb90d02d1ab23cf3342e8e9fc4c7fb89ccc076dd1f5350bd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x83E6 10052 bytes
font_04_sfnt_off0000a685.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA685 16036 bytes