Malicious PDF — malware analysis report

Static analysis result for SHA-256 c37624fd4c16095a…

MALICIOUS

PDF

54.5 KB Created: 2020-08-17 07:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b0c19d8f6ddc666a5c0897a5852d58 SHA-1: 02612bb5df173dcaec8f82d8eb144c46b0e94e91 SHA-256: c37624fd4c16095ad400e4aa81e154999542e62f09d459348cca1c4e8b5bc825
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a significant portion pointing to a redirector service. The primary malicious URL, https://ttraff.com/pify?keyword=complete+anatomy+3d4medical+apk, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'complete anatomy 3d4medical apk', suggesting a lure to download potentially unwanted or malicious software. The presence of a large number of external PDF links, many pointing to unknown domains, further supports the malicious intent.

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=complete+anatomy+3d4medical+apk
    • http://fevapapa.theluckyonez.com/uploads/1/3/1/4/131437308/9095502.pdf
    • http://sotifa.saclegalprep.com/uploads/1/3/1/6/131606620/876fc.pdf
    • http://kijal.hyesookchoi.com/uploads/1/3/1/4/131437363/guduzefital_didowa.pdf
    • http://files.hmonghistorycenter.org/uploads/1/3/2/7/132740606/fea7238a4995.pdf
    • http://files.orchidstars.com/uploads/1/3/2/7/132710659/pufonugidoximo_duzoremegajog.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/38056088246.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/prevention_of_food_adulteration_rules_1955.pdf
    • https://cdn.shopify.com/s/files/1/0432/0942/5056/files/because_beatles_satb.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/philippe_aries_centuries_of_childhood.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/diabetes_mellitus_guidelines_sri_lanka.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/3754981577.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/osrs_water_battlestaff.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8700/files/short_history_of_ottoman_empire.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/betenaledo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/soguberusaxelin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/dokor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/44846636949.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b16.bin
db1a344a4498635ad3d2e5a41c5a0a7fa6e1d84bd60f36b67d1c9c09a6c3d23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B16 5268 bytes
font_01_sfnt_off00007d00.bin
d49bdbfb519552eff2190ac0438f99e5de4d230a8188c609a829d4634fff926f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D00 20848 bytes
font_02_sfnt_off00009cc4.bin
4e67e8fe331ca72f6706838fce839931bf339cc86c5af4b4b27b9936476b0a6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC4 2120 bytes
font_03_sfnt_off0000a5ea.bin
0be7e5967748114a3f99f0bd30cf63aca62a726e5d8a8e6020355380bbb2adb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EA 10744 bytes

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