Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5429bc425db663…

MALICIOUS

PDF

43.9 KB Created: 2020-09-14 03:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b385282a471d3f7441863458763aa6d0 SHA-1: 6fc7de264783ea523617a2f99c5e32206c8ffa41 SHA-256: ef5429bc425db6635d376742b386315bbbb580e4176e6679083807ad5ef4b604
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One prominent URL, 'https://ttraff.me/pify?keyword=believer%2527s+bible+commentary+pdf', is flagged as a malicious redirector. The presence of a large number of external links, many pointing to seemingly unrelated PDF files, suggests an attempt at SEO manipulation or a broad distribution of potentially malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/pify?keyword=believer%2527s+bible+commentary+pdf
    • http://files.pawsitivepupdogtraining.com/uploads/1/3/1/4/131408169/3385035.pdf
    • http://files.bright-thoughts.co.uk/uploads/1/3/1/4/131438786/3682554.pdf
    • http://geluk.shynelleagaran.com/uploads/1/3/1/1/131164250/83fa4.pdf
    • http://files.girlinherbirks.com/uploads/1/3/0/9/130969312/7626077.pdf
    • https://static.usrfiles.com/ugd/c638b7_04056d537da847a0aa2f00cf3f8fabcd.pdf
    • https://static.usrfiles.com/ugd/37428b_3402b1b7f10a4979b4d7a9dcc6ce524c.pdf
    • https://static.usrfiles.com/ugd/e4ff69_35a60b948955429680ba5627bb70c11a.pdf
    • https://static.usrfiles.com/ugd/2ac701_1dd28c524d71476c8a82237b8b84b53f.pdf
    • https://static.usrfiles.com/ugd/0d002d_b04298e107f84dd18bf27d3326aac09c.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/moxugid.pdf
    • https://cdn.shopify.com/s/files/1/0428/4550/3655/files/calories_in_a_sheetz_chili_dog.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/46996504550.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/towibowuzafuxaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/tewepajifasizuj.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_e2d7ed33f87e4b2eb1ab839e0aa32000.pdf
    • https://static.usrfiles.com/ugd/f1d680_e23faec087194911aa69e9bc6e0456e7.pdf
    • https://static.usrfiles.com/ugd/536122_9e846b425ad14417a3fdc734089af2cc.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_bced3bc7825e476fa172939727968103.pdf
    • https://static.usrfiles.com/ugd/735424_5495f879fc494e6e9bcb7143d5dc384e.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://static.usrfiles.com/ugd/a2ebd8_

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc5.bin
7253b8345c1491363052c6e6144bef65d5e268e018f3daf0f713330652a16af6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 5684 bytes
font_01_sfnt_off00007f1f.bin
66151caf6126e7e00abf1fa46fb6232a8e3dbe246a59a8e98defd0f82b53aac6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 10352 bytes