Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f3480a237b5e16…

MALICIOUS

PDF

58.2 KB Created: 2020-08-20 04:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deec88e31c4094a355604f543f07c608 SHA-1: 7674beeb888b014a01fc5d32dae7bd6c472a4486 SHA-256: d3f3480a237b5e167d6f80f6273d81561ef805da5454d4fe69a59e06e2f074b5
128 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.ru). The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'European journal of haematology case report'. The presence of a link farm and a redirector suggests a phishing or credential harvesting attempt. No scripts were extracted, limiting the analysis of specific execution chains.

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.ru/pify?keyword=european+journal+of+haematology+case+report
    • http://files.apexfbc.org/uploads/1/3/1/0/131071167/wujogawumuko-fuliw-tumiramale.pdf
    • http://files.roundislandlightmichigan.com/uploads/1/3/0/7/130775229/niduvuropoluj.pdf
    • http://files.littleislandapothecary.com/uploads/1/3/1/3/131380341/fe7582.pdf
    • http://files.broadwaterdragons.com/uploads/1/3/1/3/131379054/zomudakumeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/7010/3452/files/tazujowifi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/20914359970.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/applied_physics_letters_reference_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/carmine_gallo_the_apple_experience.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/34656893361.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/dalujobevenudux.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/duxom.pdf
    • https://cdn.shopify.com/s/files/1/0438/0996/4192/files/vatogogogomukalolupojam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/muwerojuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/vinodegurabuziwupe.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_off0000a3b8.bin
da9065f9df6ed100be7d4f6a424e33cf2999645af2c9e5941933d900b323157c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B8 5564 bytes
font_01_sfnt_off0000b691.bin
ec905d434522e5955777d2437ff42806271e80b80b16804c82c51ab017cfff91
pdf-font-stream PDF embedded font (sfnt) at offset 0xB691 10952 bytes