Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1d569da570b1ee…

MALICIOUS

PDF

44.9 KB Created: 2020-08-22 06:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d5a71e789faadd9d1a31e7619d40af9 SHA-1: c1857eb9713447e264a10768df42fa0a978620fe SHA-256: dd1d569da570b1eee347615e8fbb22f2ddc8fa49114493573837991e7b06173b
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to 'emi calculation excel spreadsheets'. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to a malicious site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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=emi+calculation+excel+spreadsheets
    • http://files.mslaurenthomas.com/uploads/1/3/2/6/132682471/komizojuralej.pdf
    • http://sowime.kaylacranston.com/uploads/1/3/1/4/131483281/866797.pdf
    • http://files.alljourneysfitness.com/uploads/1/3/1/3/131379594/fonabu.pdf
    • http://buxave.in-the-word.com/uploads/1/3/1/6/131606162/savokaxixog-kudusumonaju-binopatexa-zudilenutok.pdf
    • http://didif.maverickarthealing.com/uploads/1/3/1/0/131070450/0875e39af07fdaa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/31502165310.pdf
    • https://cdn.shopify.com/s/files/1/0429/0750/0711/files/91538516742.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/50642475065.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/faxufak.pdf
    • https://cdn.shopify.com/s/files/1/0432/0624/6557/files/69368471868.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/76300997238.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/26362713499.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/difference_between_static_and_dynamic.pdf
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/nota_keuangan_rapbn_2020.pdf
    • https://cdn.shopify.com/s/files/1/0454/3918/9142/files/xejijigisipanutulupuvex.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/fiwofegunuxifusoxutigipam.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_off000064c9.bin
d6ea8a848c88d8aada4592b4b9fd8bcee7d217c13362679c9897ef27a93537ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 5220 bytes
font_01_sfnt_off0000764e.bin
0fad1a8b370f9563499450833a6cd3be03c5d70403f6580d142a4f82e0be1a2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x764E 10048 bytes
font_02_sfnt_off00009898.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9898 4324 bytes