Malicious PDF — malware analysis report

Static analysis result for SHA-256 f988117cf454aeab…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 22:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a879847387659c90fb533d9088aa3a5b SHA-1: b1d007e2079d9b135ed815430932c82c14f4727a SHA-256: f988117cf454aeababe80ce32b4c7b3dae2d179e3e8b38fc249a74b3bd12d940
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, masquerading as a Southwest Airlines baggage damage claim form. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the embedded URL. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=southwest+airlines+baggage+damage+claim+form
    • http://files.afterthefallinc.com/uploads/1/3/0/8/130874213/burifikivaberu.pdf
    • http://files.terricohn.com/uploads/1/3/0/7/130776594/5786881.pdf
    • http://zirebi.richardpmann.com/uploads/1/3/0/8/130874474/9710240.pdf
    • http://files.lake-kabetogama.com/uploads/1/3/2/6/132682701/e7f9b806011061d.pdf
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/62867483116.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/98302259794.pdf
    • https://cdn.shopify.com/s/files/1/0460/1964/1503/files/bronchiolitis_aap_clinical_practice_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3834/files/farujomifanajojoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/26220670106.pdf
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/assessment_center_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/engineering_leveling_guide_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0435/6656/3487/files/ranedenenajizit.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nosafinug.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/75318610740.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/resanurewewasaziwok.pdf
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/kaxogujewebetosuvoban.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/mejumamizeforusanezu.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_off0000659f.bin
d80862beb28a6b63843a06f8eccc18442076e735adcd87f7cf75ef53cd877e77
pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 5772 bytes
font_01_sfnt_off00007920.bin
8168a0f5a73ca04f4279c999c51fac51774b8b45d677c2f08e00baa314a9cb47
pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 9616 bytes