Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fc7cfbf3119083…

MALICIOUS

PDF

57.8 KB Created: 2020-08-29 08:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc6e99d8fb8f7634e949a6c17492b32 SHA-1: fa993b1ad3da5014b5ede9ded71d37ab1eaeb0a3 SHA-256: 30fc7cfbf31190837c6c2de7b460d4b0b63e0aacfa0141ba8f5bbf2d2a6a06f0
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.cc', a known malicious domain. Additionally, it hosts a large number of external PDF links, many of which are benign but serve to obscure the malicious intent. The document body and metadata suggest a lure for a free download, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=devi+bhagavatam+telugu+free+download
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/counseling_theories_and_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/chuyn_sang_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/pitman_probability_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/35409396362.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/82290721178.pdf
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/79512006135.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/josigavubazoselefevenev.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/ratonotex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/diwidugavolamerafiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/xagavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/old_san_francisco_townhomes_baton_ro.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/91249401693.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/adobe_reader_dc_offline_installer.pdf
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/10391683186.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a01.bin
e94d9691e13d6741fff6b8ffcd24eb503357a430322ad163f71c8b5b5cfb0d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A01 5316 bytes
font_01_sfnt_off00007c06.bin
09efb5ec6387c48acfedb892666f2c54baae4169c8be752a057265beadd8e182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C06 3192 bytes
font_02_sfnt_off00008955.bin
1b2c7c4bcb394d3cdf38f765543dfa896852067c3c30f5e42eff50f2b9d894a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8955 11688 bytes
font_03_sfnt_off0000b0dd.bin
8ba1eb449cb6848c392f898d08848e04348adab2e5f7ac5880014bac5996b09c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DD 17636 bytes
font_04_sfnt_off0000cb34.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB34 4324 bytes

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