Malicious PDF — malware analysis report

Static analysis result for SHA-256 3326cba7c0bf52f3…

MALICIOUS

PDF

40.7 KB Created: 2020-08-20 06:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf27d2cd9a366c1c34979d8e4ca679f SHA-1: 54124726f0c77dcf82946e63dad37c4eb76f987c SHA-256: 3326cba7c0bf52f3ad3c181feef6f88513b5bcbba923063b422f0115ccacae9f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and references 'apk file of calculator vault', suggesting a lure. The PDF also contains a mass external link farm, with many links pointing to Shopify domains, but the primary malicious indicator is the ttraff.com redirector. 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=apk+file+of+calculator+vault
    • http://xapele.eviloliveproductions.com/uploads/1/3/1/6/131606289/melatiruv.pdf
    • http://files.loricesbeautyplace.com/uploads/1/3/1/3/131383383/7839454.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/47439711063.pdf
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/81480551235.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/62533123243.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/importance_of_behavioral_science.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/vector_magic_key_gen.pdf
    • https://cdn.shopify.com/s/files/1/0434/3244/4056/files/wawanojo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/zekidexugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1480/6937/files/63458989234.pdf
    • https://cdn.shopify.com/s/files/1/0431/0122/5114/files/20192310327.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/convert_to_word_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/fufafowotukokis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9045/files/85115022828.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_off00005a01.bin
f46da2ce811608eac50cd6b9873d6c9944e444658246eb0c3aa46e0b326abb2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A01 4944 bytes
font_01_sfnt_off00006aeb.bin
b5613346a7e3045fa81596b8d046cfc9228db55e0264e3acfe022ae9128d80eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB 13684 bytes

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