Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0913eba2e9f3df3…

MALICIOUS

PDF

58.5 KB Created: 2020-08-09 13:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af48a91069c8d6b52f4b3bd248fb936b SHA-1: 70771282d3fc5d84a6f9b27a45319ce64a2c7dd3 SHA-256: a0913eba2e9f3df3754e28dab5c2ae70ce754662da24de53b9225452525837b5
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to this URL, suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or phish users. No scripts were extracted, but the PDF structure and URL analysis strongly suggest a redirection-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=adaptability+test+1+in+air+force+pdf
    • http://minokaza.whitehorsediocese.ca/uploads/1/3/2/6/132681946/wusogedururode.pdf
    • http://files.rooambieretreat.com/uploads/1/3/0/7/130776159/bejurudabosip.pdf
    • http://files.weesewoodgems.com/uploads/1/3/0/7/130776602/2804915.pdf
    • http://files.makestudiorva.com/uploads/1/3/1/3/131378918/vikaditujajoda_bozataluri.pdf
    • http://files.jasminemakeupme.com/uploads/1/3/1/3/131380063/0b6262f.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/musuvukuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/likixetok.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/1236051959.pdf
    • https://cdn.shopify.com/s/files/1/0454/2182/2120/files/chemistry_formula_sheet_college.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/milk_the_1975.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/wufavivupimiro.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/45850906102.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0844/files/lebakovabogese.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/wagovixepefitajozizebiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/26495877652.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/ragirukanuwusovanoluzi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7654/9798/files/xotulerifuwaxedujipenav.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/90010521713.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e30.bin
cb205994be5c54722a0add41e1809d229b2fc12f8330cf2f8c227591a17856a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E30 5220 bytes
font_01_sfnt_off00009ffd.bin
0eb3a69522ac8da001ddb2b585f8ee90055c9ebd704a091ecd6876259af68884
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFD 14904 bytes
font_02_sfnt_off0000ce47.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE47 4324 bytes