Malicious PDF — malware analysis report

Static analysis result for SHA-256 33110bb96ef7e7ce…

MALICIOUS

PDF

33.4 KB Created: 2020-08-06 11:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c26c50e352da390b37d83c9335d2e5d8 SHA-1: c1202ef7ce065445962d9aca5dc0986094571503 SHA-256: 33110bb96ef7e7ce8cde8d7ce1868281c46ab3d2e6a215116d75d198829fe64a
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.ru/pify?keyword=misery+penguin+readers+level+6+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, suggesting a coordinated effort to distribute malicious content through a link farm. No scripts were extracted from this sample.

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.ru/pify?keyword=misery+penguin+readers+level+6+pdf
    • http://files.fosteringsuccessllc.com/uploads/1/3/2/7/132712080/solemomasusod_mitofuxiw_punino_mepasidaf.pdf
    • http://files.thinkanomalous.com/uploads/1/3/1/4/131406449/951028.pdf
    • http://files.babygeelong.com.au/uploads/1/3/1/3/131384171/16f17a94bbea9d.pdf
    • http://files.connieherbergfineart.com/uploads/1/3/1/4/131407299/cefcda2.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/sorosibibabafuxinekulof.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/15531922715.pdf
    • https://cdn.shopify.com/s/files/1/0435/6171/3813/files/peribok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zixetirubopejama.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/45874865347.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/aws_kms_decrypt.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2904/files/vengeance_sample_pack._torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/3750/8252/files/komazugexikomabini.pdf
    • https://cdn.shopify.com/s/files/1/0429/7018/5879/files/lediliwugazuzerevuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/structured_data_cabling.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/15455031949.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_off00004506.bin
9fe3cc71284ee2277391fd0802bac9f9133a6c4095688bb868fc642fe647640d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4506 5528 bytes
font_01_sfnt_off00005801.bin
73617e777d46e637b98393a151ef78356f8ac62b0b532df28c6bf53f463b50b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5801 9624 bytes

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