Malicious PDF — malware analysis report

Static analysis result for SHA-256 b003d4e4d28d6d50…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 16:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53592155b98789860a06505558320a1e SHA-1: 37e794e9c12aad898675e47bd79865f9baea4fcf SHA-256: b003d4e4d28d6d5076caded2bb05d2515271aecbf06863477e79951d16ad37e2
120 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 'https://ttraff.ru/pify?keyword=spanish+body+parts+worksheet+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one hosted on Shopify. The document body, though heavily obfuscated, contains references to the redirector URL and a benign-looking Shopify URL, suggesting a lure to a malicious site.

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=spanish+body+parts+worksheet+pdf
    • http://files.gracetonchurchofchrist.org/uploads/1/3/1/6/131606128/vekazaloxafamo-gozerinax-zimubisadezixij-zebuz.pdf
    • http://files.runwildlivefree1.com/uploads/1/3/1/4/131406732/4681223.pdf
    • http://files.cherrycitycloggers.com/uploads/1/3/0/7/130775373/ruxetabavob.pdf
    • http://files.chaowangart.com/uploads/1/3/1/4/131411539/duvovixonitazow-kirikujazime-xudolidig.pdf
    • http://dulamil.buffalogapquarterbackclub.com/uploads/1/3/2/6/132696414/1981f346178.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/sifezilibobonenon.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/que_es_la_albumina_de_huevo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/58161350192.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/75015803496.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/el_neoliberalismo_en_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/davids_bridal_99_sale_2017.pdf
    • https://cdn.shopify.com/s/files/1/0437/5334/1082/files/adelaide_metro_timetable.pdf
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/57812217732.pdf
    • https://cdn.shopify.com/s/files/1/0451/0826/5125/files/60015501878.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2741/files/how_to_download_mods_on_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/anatomy_and_physiology_of_teeth.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9477/files/26377736936.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/15658744764.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_off00006b01.bin
ce4932bcc1096a04926066869bf92c4d5530626e808afb6727cc4c75713ca28d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 5596 bytes
font_01_sfnt_off00007e16.bin
c7403fa5767741062c340fe2999ba9bed5a8eed0cac5314733b6d6dd45343f67
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E16 10364 bytes