Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c715a385fc8df59…

MALICIOUS

PDF

56.8 KB Created: 2020-08-11 23:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a065d1ce56e4586d5a53ce0047d2e3 SHA-1: 4967b41c89aa0851350a93b8116cd4cc343461ca SHA-256: 2c715a385fc8df5985c6671956376d4b9ca8a7466b703986e8994bf56d9a88fc
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL points to a redirector service that appears to be part of a link farm strategy, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious URL identified is https://ttraff.com/pify?keyword=encyclopedia+of+mathematics+james+stuart+tanton+pdf.

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=encyclopedia+of+mathematics+james+stuart+tanton+pdf
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdf
    • http://vutidoso.sarahjenness.com/uploads/1/3/0/8/130814328/8733394.pdf
    • http://files.niwawriters.net/uploads/1/3/0/8/130873758/voxewi.pdf
    • http://files.joyofmakeup.ca/uploads/1/3/1/0/131069887/jegosobumega_savogik_wojefukisanule.pdf
    • http://files.circleoffriendspreschool1.com/uploads/1/3/0/7/130738553/datexumemawulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/zenajalo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/automatic_control_theory.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/advanced_wastewater_treatment_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/75284073320.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/62577370180.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufowotipopugisafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/canon_80d_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/autobiography_of_mahatma_gandhi_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/audit_of_current_liabilities.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/github_ga-_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1651/files/34714767609.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/
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/autobiography_of_mahatma_gandhi_

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098f3.bin
7d34274aba9fe1b641adddee290992bbc766cd72352a5c439f2ddf4abbb8497f
pdf-font-stream PDF embedded font (sfnt) at offset 0x98F3 5532 bytes
font_01_sfnt_off0000aba1.bin
73324459e632cfc6227971ef597eeee01c833798a21b429f8fa09fe6bb1e702f
pdf-font-stream PDF embedded font (sfnt) at offset 0xABA1 13164 bytes