Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd2220e8b6b5c15…

MALICIOUS

PDF

51.1 KB Created: 2020-08-24 20:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40b9ab4f326d9ae02685e615b6992f6a SHA-1: 725ce10a206cb77cc9d07702cea5d0d5d2e3f71d SHA-256: 9fd2220e8b6b5c15ee91a823833e7651f6ca747520d63b6e1d1f9c41f2c9dc95
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links pointing to external resources, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=lagu+ariel+noah+terbaru'. The document body itself is heavily obfuscated but contains this same URL, suggesting it is the primary lure. The presence of numerous other PDF links further supports the link farm hypothesis.

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.cc/pify?keyword=lagu+ariel+noah+terbaru
    • http://ranig.yehudiwyner.com/uploads/1/3/2/3/132303382/1729163.pdf
    • http://files.bargeadhesive.com/uploads/1/3/1/4/131454190/nafepaviw_sisoboximaxuz_wijop_kapijage.pdf
    • http://files.columbusrabbit.net/uploads/1/3/1/1/131164506/17544a9d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.pdf
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/23301415460.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/damage_to_cargo_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/guitar_tab_perfect.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/dnd_5e_druid_spells_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/2209/7304/files/majunatumavadufotupaletow.pdf
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/95057222875.pdf
    • https://cdn.shopify.com/s/files/1/0440/0549/0846/files/demonstrative_pronouns_picture_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0461/4596/2147/files/dikadazixi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9103/8118/files/apex_reading_test_3_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/6277/8264/files/ballast_water_management_convention_download.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_off000076b6.bin
5599e2d81cde001861c264b2f3cf82febb8a9273dd1723215384ba890a4fc2b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x76B6 4852 bytes
font_01_sfnt_off0000872d.bin
667e58b7e7aee417808496f511e9112c101950f5bf9f26b0a7692327269501ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x872D 10060 bytes
font_02_sfnt_off0000a9e2.bin
3c260b720ba846d87de456033c05b94d326aa9f09b16dabc19f167f97f6ae321
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E2 16204 bytes