Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0e30956b1a2822…

MALICIOUS

PDF

45.1 KB Created: 2020-08-15 14:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aca20bd4234105a733a58f70d152406a SHA-1: f801f3d0ca9af9ebd3916e8038bc337f69afd88d SHA-256: bf0e30956b1a2822bb988ddce437a049393c7caf2982f929dd617fa47c26abbf
150 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=bijan+ebrahimi+report'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify but also include other suspicious domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise its true nature as a report to entice clicks.

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=bijan+ebrahimi+report
    • http://files.patpetdingdongbelle.com/uploads/1/3/0/7/130776519/993444.pdf
    • http://zogixe.fancygirlfaces.com/uploads/1/3/1/3/131379290/4467135.pdf
    • http://tijasejam.mrgibsonsvhs.com/uploads/1/3/0/7/130776208/1090335.pdf
    • https://cdn.shopify.com/s/files/1/0435/7678/7103/files/accounting_information_system_romney_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3083/0494/files/94773094590.pdf
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/tower_defense_king_mod_apk_unlimited_money.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/drop_columns_pandas.pdf
    • https://cdn.shopify.com/s/files/1/0435/8920/6174/files/94358097390.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/sapofuxilazinaxatiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/2489/9496/files/vukedubefeliwetoluj.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2600/files/genetica_zanichelli_griffiths.pdf
    • https://cdn.shopify.com/s/files/1/0437/8473/2829/files/joribazosafika.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/36911547426.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/hoarding_rating_scale.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/les_livres_apocryphes_de_l_ancien_testament.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/bsc_nursing_syllabus_2nd_year.pdf
    • https://cdn.shopify.com/s/files/1/0438/3549/0466/files/28034670433.pdf
    • https://cdn.shopify.com/s/files/1/0433/1051/4334/files/82670367868.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_off000074d6.bin
8723a5546fb28772d18bc209b5b9c61e294abbf77951f14f3746b5133123d0f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 5112 bytes
font_01_sfnt_off00008607.bin
85043ad97590db88661c34cf19a77706ebeabcc7600904ee96ad71f3996a924e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8607 9768 bytes