Malicious PDF — malware analysis report

Static analysis result for SHA-256 93695c1020a1401b…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 09:57:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb26df8b7170e7ff3a319cbbf0554c6 SHA-1: 2f88e79522bd14c1cb698f41070b0e11b71256d9 SHA-256: 93695c1020a1401b793b6342c27d4001f2c45ad967439e67ba242b38b53a773a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=definition+of+business+finance+pdf'. This suggests the primary purpose is to lure users to click on the link, leading them to potentially malicious content or further stages of an attack. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering 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=definition+of+business+finance+pdf
    • http://files.adventshorts.com/uploads/1/3/0/7/130740338/4869770.pdf
    • http://files.greatcommissionalliance.org/uploads/1/3/1/4/131453276/0e58ed5ab19d4b.pdf
    • http://files.bellabirth.org/uploads/1/3/0/7/130740175/tovopuzeved-wevusib-silur-lasijupoputaf.pdf
    • http://files.deathcog.com/uploads/1/3/1/4/131438077/jafirujos.pdf
    • http://safiviro.varvelinstallations.com/uploads/1/3/2/6/132681647/531f2ccb.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/guwofax.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/ny_driver_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/bidesumurobolitetorimud.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/tefobizasogupazijinil.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/rigosixixifanomofetiseb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7423/files/gerok.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/gorikuxatubamegegefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1984/6311/files/57744627231.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/guzibejajib.pdf
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/tapipibakumavaledoku.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/zaburzenia_psychiczne_u_dzieci.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_off000062a8.bin
142446667d9bfe0fa3a7a8adb7a98a8e29908de3c1d6b0830848789939c7e0df
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 5044 bytes
font_01_sfnt_off000073db.bin
d64fa06bfceea35af593a4d85cd01617fdd82bd71efe72cabfae34732c5cc686
pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 9672 bytes
font_02_sfnt_off000094ef.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x94EF 4324 bytes