Malicious PDF — malware analysis report

Static analysis result for SHA-256 a599469cc960e0bc…

MALICIOUS

PDF

96.6 KB Created: 2020-08-21 08:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77756daa06deec6d9c1c148eb9d9fee1 SHA-1: 07af40fc9878895a2bff273bc2b94b3ad154ddd3 SHA-256: a599469cc960e0bc1e0cce93a55778b9a5e9346ca8d2ef53ccdda253065a130a
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that, combined with the heuristic 'SE_ADVANCE_FEE_SCAM_LURE', strongly suggests an advance-fee scam. The presence of numerous links, including a link farm, further supports the malicious intent of directing users to potentially harmful sites.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=just+jumble+answers+672
    • http://files.loridanenberg.com/uploads/1/3/1/3/131398174/2c4b0a.pdf
    • http://files.northwayds.com/uploads/1/3/0/7/130739415/a96c0034d49d.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/14304875115.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/47602249479.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/pepipujutiladaxujikovi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/jesizimoxatimusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/inherited_ira_rmd_calculation_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8892/9187/files/zovotoseginivolagunixus.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/public_private_partnership.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/fepizalurorag.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/fighter_brute_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/katy_perry_road_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0447/8880/9889/files/psychological_causes_of_stress.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_off000131a2.bin
b3d43640561584b1d8dd1f20bc3cf2a28576fa90bac36796cc5f1b7cb08e22c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x131A2 5220 bytes
font_01_sfnt_off0001435f.bin
027982ec1e946d287c7ef3d0362959acf0fc88851e67fc6baaa4e9d8f9e9a16a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1435F 10412 bytes
font_02_sfnt_off000166fd.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x166FD 4324 bytes