Malicious PDF — malware analysis report

Static analysis result for SHA-256 c824bd36ca020d1a…

MALICIOUS

PDF

51.8 KB Created: 2020-08-20 07:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb0c841e5301086874d52761815dc6a5 SHA-1: 00918f30cbe2c7fc014296642c3766823da90975 SHA-256: c824bd36ca020d1a790272da9dd5c28f2ae3acf50136ff85143a5e561f6050d5
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to Shopify. The presence of a visual download button lure suggests an attempt to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adi+buddha+mandala+mantra+sheet
    • http://files.acpnutrition.com/uploads/1/3/1/6/131637325/moviridu_lasal.pdf
    • http://zaluj.outdoor-motorsports.net/uploads/1/3/1/3/131383591/6891287.pdf
    • http://files.gobigt.com/uploads/1/3/0/7/130775701/kemagalada.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5783/files/tetopimuvatajazovupijo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/vajodemotijazotamewoxux.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/nokeso.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/la_vie_en_rose_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/pisixij.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/dajuvaditemalututelaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/balanitis_manejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/46777183929.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/dezubosezopiwipavamu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/67463405503.pdf
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/fozeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/fewotuwe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b6.bin
9fbe5f5cf2ae93657acc7ea6ec8d2845740219ecb603e56155d7c1ccd9327cb2
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B6 7504 bytes
font_01_sfnt_off000082fa.bin
bd247fbff524d17efed5d81721f913e579870846eff8a5752f8afd93ae71776e
pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 4968 bytes
font_02_sfnt_off000093a1.bin
2956dbb183b0ebc84fd245b69ab89418a23ff7b9689b9121c6fbacae13461503
pdf-font-stream PDF embedded font (sfnt) at offset 0x93A1 9424 bytes
font_03_sfnt_off0000b3d5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D5 4324 bytes