Malicious PDF — malware analysis report

Static analysis result for SHA-256 876830fa0ca34d25…

MALICIOUS

PDF

40.3 KB Created: 2020-08-21 13:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96ea807950e8ed7eb2e370f046837b28 SHA-1: b0b53b6156a232fab72e0fae964e29d8d641c21d SHA-256: 876830fa0ca34d25895946fe37eb5dd229528a6a940de1f39fc29086f3064c10
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=rooms+in+clue+game+fight+list+answers', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links hosted on benign platforms like Shopify indicates an attempt to obscure the malicious destination.

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.cc/pify?keyword=rooms+in+clue+game+fight+list+answers
    • http://files.numc.net/uploads/1/3/1/4/131409090/joxizevofalaxilex.pdf
    • http://wipux.bonescanoeandcampground.com/uploads/1/3/0/8/130874276/zikobudejitidirojom.pdf
    • http://rivosaxo.clayshootingdevon.co.uk/uploads/1/3/0/7/130775350/masogulem-rofuzevekuwanef-loxir.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/sed_awk_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/7528/8742/files/59051462746.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2111/files/givixizanabizutagu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/bawivibixujerikapaxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/angular_set_form_field_dirty.pdf
    • https://cdn.shopify.com/s/files/1/0430/1497/9737/files/9893660821.pdf
    • https://cdn.shopify.com/s/files/1/0462/9502/3776/files/99145086514.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/78116265009.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/14479202714.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/11458730255.pdf
    • https://cdn.shopify.com/s/files/1/0433/0917/0856/files/berlitz_english_level_1-_4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000513a.bin
aadb27a1146b780518c6d3a2d3cdd46b0342d1d4abf9409505049d5b846787ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x513A 5276 bytes
font_01_sfnt_off0000630e.bin
aac6b4a00dbccd6d9440ed56d06701ec9676dd9fa06e4e96815b5b120d6fad2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 10308 bytes
font_02_sfnt_off00008659.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8659 4324 bytes