Malicious PDF — malware analysis report

Static analysis result for SHA-256 e736db03f89c842f…

MALICIOUS

PDF

38.8 KB Created: 2020-08-07 05:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86056ad4c5e6fe20a30f9304df9f20a9 SHA-1: 79ef76f511c04d9a14707a636a53464f64d6763f SHA-256: e736db03f89c842f65518aab87e59aa1afde63c05cd11f8d15d64f66d8aa1cee
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign Shopify domains, likely used to obscure the malicious redirector. The primary malicious URL is 'https://ttraff.com/pify?keyword=akuntansi+biaya+edisi+2+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=akuntansi+biaya+edisi+2+pdf
    • http://files.luxaeternasolar.com/uploads/1/3/0/7/130775108/nipusenivobe-kipazimunika-jokiwoxenes-lamemasuxoru.pdf
    • http://files.reneubeauty.com/uploads/1/3/1/6/131636927/tebuvarutu.pdf
    • http://files.mostblessedtrinityacademy.org/uploads/1/3/0/7/130738903/729357.pdf
    • http://files.fear-lesstherapy.com/uploads/1/3/0/7/130739265/1207411.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/analytical_chemistry_by_gary_christian_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/zofedobesal.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/sadixewikitijalebe.pdf
    • https://cdn.shopify.com/s/files/1/0441/2804/3160/files/76370698934.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/dawesavomirop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/sorting_algorithms_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/nearest_neighbor_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/winanetef.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/91060462814.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/26591500587.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/18046685513.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/60714658459.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f1e.bin
173c3ae8cb6ebac993b18ac09f54dca29f0cf7ba539d01028ff7a18d25132e51
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1E 5104 bytes
font_01_sfnt_off0000608d.bin
89f43d3898b7f7bf82fe6bdff2a74f4aa0273182c9121dcb61f284dfbb42adac
pdf-font-stream PDF embedded font (sfnt) at offset 0x608D 9244 bytes
font_02_sfnt_off00008034.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 4324 bytes