Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccc167b9fa2088e…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 08:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b1f8f542bc3d80360d08221cfab0c39 SHA-1: 5cdd399430aa05ca8e01db79546c10da56edc0bf SHA-256: bccc167b9fa2088ec16af4ed5bb07752dffe5f0807a6f3ab8c05f388c664ef7b
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains text related to registration forms and urgency, suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a deliberate effort to direct users to potentially harmful content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=amstelveen+gemeente+registration+form
    • http://jexofow.kathleenlorenzo.com/uploads/1/3/2/7/132712615/zuwitimosa_razabudimun.pdf
    • http://files.eastprospectparade.org/uploads/1/3/1/3/131383934/jebosusekep_kumixusosabura.pdf
    • http://files.jabcoassocinc.com/uploads/1/3/1/0/131070846/domebefi-nifol-kitifatagilab.pdf
    • http://files.love-chaos.com/uploads/1/3/0/9/130969659/xinirudazaza.pdf
    • http://files.pamelaplattstudio.com/uploads/1/3/1/3/131380305/saviwazulip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6754/files/38990045853.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/fujefumogupufajifitupuweg.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/wetavifijasanenovugamigi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/factoring_polynomials_game.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/42861215999.pdf
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/absceso_pulmonar_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/67254412419.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/moonglow_chabon.pdf
    • https://cdn.shopify.com/s/files/1/0440/5798/5189/files/78850466451.pdf
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/23427420651.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/komewovud.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_off00006b27.bin
0ee940cdb50aabf32eba880732fb47515c9f2827a6d58f64636f9947606af614
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B27 5136 bytes
font_01_sfnt_off00007c90.bin
6e790833e484518c281cb66bbf6d96c74be270a3ef4b8009c9a5e3562f9da84b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C90 10744 bytes