Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95d66cce137abde…

MALICIOUS

PDF

71.2 KB Created: 2020-08-08 18:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eecf36579bce50a61366cfa797c937e SHA-1: df228f47bb283dbb106cc0162dc2e2038a7055fc SHA-256: f95d66cce137abde88c98d3d29212492a979ee790a0a50e68066a788f70689e6
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.cc/pify?keyword=anlodipino+bula+pdf+anvisa'. Another critical heuristic identified a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0431/8189/9944/files/jifenapufe.pdf' being the first listed. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting it's the primary lure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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.cc/pify?keyword=anlodipino+bula+pdf+anvisa
    • http://files.rcqma.com/uploads/1/3/1/6/131606325/batuzuzuvinetaluxe.pdf
    • http://files.resfeberrecollections.com/uploads/1/3/0/9/130969298/fataj-magapararexel-nadipad.pdf
    • http://varagome.creatrixmusicworks.com/uploads/1/3/1/6/131637136/sarakeje.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/jifenapufe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/wisojejore.pdf
    • https://cdn.shopify.com/s/files/1/0440/8705/0390/files/autorretrato_sin_mi_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/48145166668.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/85489886695.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/cake_recipes_files.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/babuwezifobaritixugakow.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/dukeworafexedisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/campbell_biology_10th_edition_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/15090911734.pdf
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/53416898229.pdf
    • https://cdn.shopify.com/s/files/1/0431/5732/3925/files/27705405811.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_off0000d243.bin
ff17853916e697f6abd57be88a2388f81f2e2f1884884c9b826aae5f3f124829
pdf-font-stream PDF embedded font (sfnt) at offset 0xD243 5128 bytes
font_01_sfnt_off0000e3cf.bin
5b3db2fa1494ad739a197cc2392e5e890c97e89df08ef7d4592181944dd51b46
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CF 13960 bytes