Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad18828af3630bd6…

MALICIOUS

PDF

47.5 KB Created: 2020-08-18 22:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05f5fd00e8a34e8e3cfb79d64450a54a SHA-1: aafae5f51cd4b9a553846f4de92f14cf9562fa11 SHA-256: ad18828af3630bd698c1c8a3af9f4b4e02892bd520db208010dbf12d74b08fb5
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a Cisco router user manual, to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external resources, many hosted on Shopify. The ML classifier strongly indicates maliciousness.

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=cisco+router+user+manual+pdf
    • http://files.redeemeddesigns.net/uploads/1/3/1/6/131636808/8606889.pdf
    • http://files.livingmagicentertainment.com/uploads/1/3/0/7/130775959/jifebobemexinuba.pdf
    • http://files.10and10onthego.com/uploads/1/3/0/9/130969386/e022777005af.pdf
    • http://kumim.mccullochsfitness.com/uploads/1/3/2/7/132710712/9556449.pdf
    • http://sasakix.jesusourredeemerlc.org/uploads/1/3/1/1/131164250/48980acef5010c.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/disuladopidiwunabot.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/native_american_farming_cultures_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/34445229762.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/84817107386.pdf
    • https://cdn.shopify.com/s/files/1/0439/0230/4408/files/blank_bingo_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/xupaletabanitosowa.pdf
    • https://cdn.shopify.com/s/files/1/0446/6517/6217/files/leadership_styles_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/pikiretolavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/fepovazejume.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/totopajivumipedizibusik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/happy_birthday_mom_song_free.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_off00006de2.bin
b5b217ce4e7a7c5934906f3418ff1e1b63dda33d6d1ab31a961af6d9a7fe20a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 5208 bytes
font_01_sfnt_off00007f79.bin
856fcd4404fc2230d711021ca8aee11db6589071b2c9da0379d5f35507e562a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F79 10404 bytes
font_02_sfnt_off0000a30d.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA30D 4324 bytes