Malicious PDF — malware analysis report

Static analysis result for SHA-256 a600007c311989c7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 06:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c7064d96754e6f5250c242e534552f SHA-1: 98e0892bb2de9a9dd85c6f84fb1c490d3d4de716 SHA-256: a600007c311989c74227ec600c6c6b84e3adf513cd42fa442a6b5f3ec87b012c
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a lure to click on a malicious link. No scripts were extracted from this sample.

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=types+of+grease+for+bearings+pdf
    • http://files.fereks.net/uploads/1/3/1/4/131453036/labubitafa.pdf
    • http://files.alteanunez.net/uploads/1/3/0/7/130775084/a8c12.pdf
    • http://files.estatenest.ca/uploads/1/3/1/0/131071166/lefaloxoboki.pdf
    • http://files.jemskpropertyventuresinc.com/uploads/1/3/1/8/131857791/polusonev.pdf
    • http://files.hhseyeofthestorm.org/uploads/1/3/1/4/131452823/7b966bbf72931.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/rifibusulunesaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/75870930132.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/lojur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/subokinolimuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/zolodosepinowimoxabex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/98308500072.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/adventure_time_lore.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/sorevi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/zinikusumetujumiluketexot.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/nyan_cats_100_hours.pdf
    • https://cdn.shopify.com/s/files/1/0430/0511/6575/files/nejukojivote.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a48.bin
dbfe9c40f93b63a158c670307ff993a17f8a82f64e37c753fae7148fceea4c30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A48 5368 bytes
font_01_sfnt_off00007c9c.bin
72cbbe669a998742eea3e6c16811cda5d8ba49dbec4ff884f36eff676216a6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9C 10036 bytes

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