Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc6476652819bcf…

MALICIOUS

PDF

57.1 KB Created: 2020-08-18 14:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72cb991f691b212ef0d5c9efe0fed999 SHA-1: e854915d35c9e0b15b03ba77810b5e44969866ea SHA-256: fdc6476652819bcf048216c50dcb14d2af859ec64c644dfb3381ac9469a3288d
120 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 critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of many external PDF links, predominantly hosted on 'cdn.shopify.com', indicates a potential SEO manipulation or content distribution scheme.

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=sapna+choudhary+video++mp4
    • http://simewuga.stjohnsepiscopalchurch.org/uploads/1/3/1/3/131379808/vofutuselanofi_faxefaludotus_jalep_reton.pdf
    • http://nabuwo.illinoishousematch.com/uploads/1/3/1/4/131482952/53d5e9bdc94.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/17984037009.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/biblia_reina_valera_de_estudio_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/alphanumeric_series_reasoning_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/gebomavigoxatesiruge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zovoxumaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/1789/4050/files/como_fazer_uma_apresentao_de_empresa_em.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/joindre_un_dans_messenger.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/libivose.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/8898039196.pdf
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/ruwelubibomegexeginixi.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000609d.bin
b30e9f04b39e2b3e41660962a99c735720c27d167eb368166c3caea54a36f183
pdf-font-stream PDF embedded font (sfnt) at offset 0x609D 5260 bytes
font_01_sfnt_off00007240.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 3720 bytes
font_02_sfnt_off00007da3.bin
a47ccf8fb9b2fe8743d91a8a64d614028ddf4a2f573bdcac1f702f36b4c7138b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 14100 bytes
font_03_sfnt_off0000a90f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA90F 4324 bytes
font_04_sfnt_off0000b710.bin
0d9d32e706cd2981e3c69011087a9f36733eb58edd04d58cd725a2a8e7d42fee
pdf-font-stream PDF embedded font (sfnt) at offset 0xB710 9996 bytes