Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a7e771d7537911…

MALICIOUS

PDF

35.2 KB Created: 2020-08-24 12:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ac9d37df1f954d34ef2e68007e46cf9 SHA-1: 8677525e412005cda1489f21fad399936ff76945 SHA-256: 07a7e771d75379112881eb5e7890302c69dbec4e530922eded81ee91cb5c6c65
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a link farm or SEO spam, with a large number of embedded URLs pointing to external PDF documents. One of these URLs, 'https://ttraff.ru/pify?keyword=kadamban+tamil+movie+songs++masstamilan', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and a reference to the malicious URL, suggesting an attempt to lure users or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=kadamban+tamil+movie+songs++masstamilan
    • http://jutatuker.welostthemap.com/uploads/1/3/1/4/131437425/tuxuvebekemafot.pdf
    • http://jeroje.calzadoleonsr.net/uploads/1/3/0/8/130874655/sefejewekemam-duloxokon.pdf
    • http://rutelap.keanaturephotography.com/uploads/1/3/1/4/131437252/2309651.pdf
    • http://libag.earlbyrdthethird.com/uploads/1/3/1/6/131606289/vubas-zidurufavoraja.pdf
    • http://files.devops-community.com/uploads/1/3/1/4/131453648/4197629.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7362/6524/files/50805612385.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/aqualung_tab.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/1323111031.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/bitesasatewawosop.pdf
    • https://cdn.shopify.com/s/files/1/0428/0785/3223/files/physical_science_grade_10_siyavula_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/black_ops_3_cheat_codes_ps4.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/zagulepesoxifadavitix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/30019510479.pdf
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/impulse_buying_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/44447992762.pdf
    • https://cdn.shopify.com/s/files/1/0454/2873/6168/files/76388570885.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c61.bin
f54834c610b76f31f52c00bd2aaf47e6358abb081fd56cac8ecc7129f9097550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C61 5220 bytes
font_01_sfnt_off00005e18.bin
46ccdfcef708913341fa208e6a408546d88998e88c60be78e26b3c8d8a805859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E18 9928 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.