Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1397c1f971f6dc…

MALICIOUS

PDF

42.4 KB Created: 2020-07-13 09:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c1482615fca7928bb28847e384c0170 SHA-1: 06763a9f283e08de24560f295dd1213f174a3fd9 SHA-256: fb1397c1f971f6dc374f6679f4d44f347844d7baf2c9791cbcc1b3a25d89720f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with heuristics indicating it's a malicious redirector and a link farm. One of the primary links points to 'ttraff.ru', a known malicious redirector. Another significant link leads to 'files.rohopublishing.com'. The document body is heavily obfuscated and appears to be metadata rather than user-readable content, suggesting the primary malicious function is driven by the embedded links.

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=corpus+h%25C3%25A9ros+et+antih%25C3%25A9ros
    • http://files.rohopublishing.com/uploads/1/3/2/6/132682565/af890.pdf
    • http://files.andreablackerby.com/uploads/1/3/0/8/130813317/lanepowuvepenez_wekewevituke_fixojiboku_vebumew.pdf
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdf
    • http://files.lahainalunamusic.org/uploads/1/3/0/8/130874019/lemikeguwebafidij.pdf
    • http://files.cdpvetcaucus.org/uploads/1/3/1/3/131381044/tubugok_nuzikid_jebanokata.pdf
    • http://files.laws.cassadaganewyork.org/uploads/1/3/0/7/130739892/ponajixulipeva-sojasajurob.pdf
    • http://files.yogashak.com/uploads/1/3/0/9/130969910/zevuru.pdf
    • https://zedipuxari.files.wordpress.com/2020/07/45306412646.pdf
    • https://gebujurerine.files.wordpress.com/2020/07/janusaxodugudezubiro.pdf
    • https://dupudetobepe.files.wordpress.com/2020/07/68235743082.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/wabibiwej.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/kebukafegobazasazim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofekofunore.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/81380999851.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/5346462176.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_off00006602.bin
aef8cdd14577b10791ccdaa30a08b90d06e0b89c0b77495b9ec607db34a3f879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 4920 bytes
font_01_sfnt_off00007672.bin
2ee44d127ea445684819bf82e101f85fe158b02b475a93d16dfa91d8955600ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7672 11508 bytes

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