Malicious PDF — malware analysis report

Static analysis result for SHA-256 811a2653d0697988…

MALICIOUS

PDF

49.2 KB Created: 2020-08-22 08:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40c004ef24192ead612081ab39c0c027 SHA-1: 08c293f1d2e58cac60a89cf52ac8c38f717258ce SHA-256: 811a2653d069798808e8e1e00d31e5946e643a164c822472912e6fca93e4991e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=angularjs+pdf+creation', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and another benign-looking Shopify URL, suggesting a deliberate attempt to obscure the malicious intent.

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=angularjs+pdf+creation
    • http://files.jilliangallays.com/uploads/1/3/0/7/130739376/eacee7e3.pdf
    • http://files.janshoemaker.com/uploads/1/3/2/6/132695401/b57526c.pdf
    • http://files.dndforwomen.com/uploads/1/3/0/8/130874316/bepozuwuwevef-teredugolen-nuburowusege-watavow.pdf
    • http://files.mkrgenealogy.com/uploads/1/3/1/4/131437711/finopero_mefitelakeb_nujidikewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/depoba.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/simple_piano_pop_songs_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/41157684951.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/44632968918.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/24013029360.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/gobiluz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/acg_clinical_guideline_alcoholic_liver_disease.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/preposition_of_place_worksheet_british_council.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1233/files/forward_biased_diode.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/13267632386.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/17808708878.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/witasisusigupasisujore.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_off000074b7.bin
b18f16fab4b3aceb2f7d97fa75679b41717e4d8c196696aaee78682b5610dc51
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B7 5268 bytes
font_01_sfnt_off000086b4.bin
c344b7fe722864f0068ee335dbdb04cc33264e839db3e5e218b994c376d89645
pdf-font-stream PDF embedded font (sfnt) at offset 0x86B4 10304 bytes
font_02_sfnt_off0000a9ff.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9FF 4324 bytes