Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae02e75b101ddca0…

MALICIOUS

PDF

74.7 KB Created: 2020-08-30 20:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a38668cf95585f25a6c8292705a5782a SHA-1: 9761972676c943ef29db12f600c90a6e9f757b14 SHA-256: ae02e75b101ddca071a589561d3c7a7b47307fcb2fd245081d884ac70da184a3
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a game guide, aiming to lure users to a malicious site. The ML classifier strongly indicated maliciousness, and the PDF structure includes a link farm, suggesting SEO manipulation for traffic. The primary IOC is the malicious redirector URL.

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.me/wix?keyword=dragon+quest+9+komplettl%25C3%25B6sung+coffin
    • https://cdn.shopify.com/s/files/1/0433/8122/7670/files/dosesof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/dnd_5e_artificer_revised_guide.pdf
    • https://cdn.shopify.com/s/files/1/0459/6219/9200/files/lace_and_beads_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/el_caballo_de_troya_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3282/files/esl_reading_comprehension_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0440/0444/2262/files/watabafipewebitop.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/lerulaluxufifujinufap.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/47406006068.pdf
    • https://cdn.shopify.com/s/files/1/0439/0843/2027/files/43484657206.pdf
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/anorexia_nervosa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/olympus_has_fallen_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/17861890456.pdf
    • https://static.usrfiles.com/ugd/a44510_7f6c461602f347078308f6a0af680587.pdf
    • https://static.usrfiles.com/ugd/97aff7_62de023c9ae443e9b5887bbd6030b9c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_74ce2ee4f04c40b098c673db95b548dc.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_off0000e399.bin
b96ed6e9a2f1dc961c587805688f938cd6baf488c6b9209dc4ea5cfef462de0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE399 5816 bytes
font_01_sfnt_off0000f713.bin
cfb8d6d043c6bb4eb282b3bd4033de91ee4b11ad9ad726f85b7857ecaa31ccfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF713 11232 bytes

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