Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56c660cfba638cc…

MALICIOUS

PDF

38.5 KB Created: 2020-08-18 16:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8af98e035c30a3c95148ce34d9ef1e1b SHA-1: 4eaebde640e959fe8d5989394e9d3582deb14fae SHA-256: a56c660cfba638cce54bdf1a675364d0a14c3f3f3853b2c019f0aa3ef75b372b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this is a PDF link farm designed to manipulate SEO or redirect users. The primary malicious URL identified is https://ttraff.com/pify?keyword=lion+industries+corporation+berhad+annual+report. 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=lion+industries+corporation+berhad+annual+report
    • http://files.smilemoremealprep.com/uploads/1/3/1/0/131070080/2418172.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/audiometria_tonal_liminar.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/64512459519.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/pijuvarutixufove.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/86116709737.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/rimabemunavus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3492/5463/files/venixekuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/5792/0677/files/da_form_137_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5351/files/anatomy_and_physiology_handouts.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/38808267248.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/gisovotekawufeletububomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/busadavakigelezuwofigurir.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_off0000572c.bin
ef81b6519b18857c2be1fe500347a77a3cd51f6a97d4ba199aa59ece27866c29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572C 5240 bytes
font_01_sfnt_off000068ee.bin
cc05271f2c5598f32f4cac7115a4cd7ff24e0db056b7c68e9b6846cd28c32845		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EE 10628 bytes

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