Malicious PDF — malware analysis report

Static analysis result for SHA-256 41033d968f9fac6b…

MALICIOUS

PDF

61.0 KB Created: 2020-08-07 22:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad342007f15796068c3ba892f840b117 SHA-1: 3ed12ada4f111791f7dfd244e682262576e74b80 SHA-256: 41033d968f9fac6bcb62216cd7327b2026a1ce65138eb70661a990d499565265
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=peltier+effect+explained+pdf'. The document body, though heavily obfuscated, contains a reference to this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a PDF link farm heuristic further supports the malicious nature of the document.

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.ru/pify?keyword=peltier+effect+explained+pdf
    • http://rawiboze.bertmccoy.com/uploads/1/3/1/3/131398455/vamisabubamuwitigir.pdf
    • http://files.youthdigital.com/uploads/1/3/1/8/131871477/butojafes.pdf
    • http://files.ugascienceolympiad.net/uploads/1/3/1/3/131378943/9441684.pdf
    • http://files.biggleswadesquash.com/uploads/1/3/1/0/131070581/686eb.pdf
    • http://files.siliconvalleycoders.org/uploads/1/3/1/6/131607023/xiputewo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/24033363147.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/agonismo_y_antagonismo_farmacologico.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/jurnal_skripsi_akuntansi_manajemen.pdf
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/31497983044.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/dozakazirejejenekiwub.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/71276048167.pdf
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/modipejasumenibezed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/6378229661.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/62186704857.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/nanolasozetasoxivod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/pisciculture_tilapia.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_off00009b75.bin
0a77c0ce056ac7c866943a01effac329f3d7507360728ce1ccb86bc46d7e4e47
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B75 5040 bytes
font_01_sfnt_off0000acb3.bin
e99f767c0236c7fef7990c8115824ec9deb62400498e451aa54cb26350603817
pdf-font-stream PDF embedded font (sfnt) at offset 0xACB3 10872 bytes
font_02_sfnt_off0000d193.bin
b01c3044e69f99e1dd6630ff63a75bd996a5b0513dc473f39d14a928191dbfc5
pdf-font-stream PDF embedded font (sfnt) at offset 0xD193 16108 bytes