Malicious PDF — malware analysis report

Static analysis result for SHA-256 3970602eeb40f4a6…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 07:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaa556d81d86ae1c7318d288b0d19cfc SHA-1: 199f3172af64c3dad7d1359cbec7de0c86464b17 SHA-256: 3970602eeb40f4a6cd81879f433319f8119c3168c3e706d6d5012ba1bd4ad2c1
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=microsoft+word+template+a5+booklet'. This URL is presented within the document body, disguised as a template download. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicates maliciousness.

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=microsoft+word+template+a5+booklet
    • http://files.thegrowingseedsoflove.org/uploads/1/3/1/4/131437513/8025698.pdf
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.pdf
    • http://files.changenetworkminnesota.com/uploads/1/3/1/4/131437149/d68d5c42231.pdf
    • http://siselukil.awakenthesenses.co.uk/uploads/1/3/1/0/131070718/393c21820244.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/zimikug.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/76707135131.pdf
    • https://cdn.shopify.com/s/files/1/0451/3293/9429/files/shorter_catechism.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/medical_biochemistry_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/16499764001.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/67621846660.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/android_smartphone_review_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/80347821091.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/xowunixizome.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1146/files/zowulelerixeniwexinolik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sebifoxof.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/conformation_of_disubstituted_cyclohexane.pdf
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/varumofuxoxerajimose.pdf
    • https://cdn.shopify.com/s/files/1/0430/7206/1591/files/tuxogefet.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_off00006375.bin
c55b77bf6bde93bcce8fa9e7a1e822a7dddfa7b3da03298b3851e51e1cfb7cda
pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 5724 bytes
font_01_sfnt_off000076ec.bin
81a6ddd515655dac02113e8110b918950c24a31248645e386daa221fee5270e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x76EC 9928 bytes