Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c26605bbf2a4b3d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-22 05:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e47c7c9ff3c18aab55096903d10fab28 SHA-1: 590fac60d4da145bff16bfc1948b4b2fb5a43985 SHA-256: 1c26605bbf2a4b3ddcad32db210b07c4bbe4bd432564b5e52b8c044801c3dc4f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious due to containing a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=animation+movies++website+name'. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the primary lure. The presence of numerous benign Shopify links alongside the malicious one is a common tactic to mask malicious activity.

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=animation+movies++website+name
    • http://pesevora.helpurchild.net/uploads/1/3/0/7/130774978/11d50acb06addc4.pdf
    • http://jixasojiv.quantumae.net/uploads/1/3/0/7/130738971/9b486a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/dictionnaire_juridique_arabe_franais.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/67222115864.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/dadinupiwizubumididarezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/59255214927.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/kalelumafunumuwuxuzufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/king_size_platform_bed_frame_cheap.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/39959704846.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/save_base64_to_file_c.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/auto_tune_free_mac_os_x.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1096/files/rigopebadesulexoketamam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42820491308.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/7574711824.pdf
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/burufoledekojusibi.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_off0000681a.bin
cfd6d504678212368eb52dd98f8c3302f722894564d3dfc3160c2b91da3448a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 4984 bytes
font_01_sfnt_off0000790d.bin
b4ced263741b122113658532fed2d91a384bef06b967e6fb3d2d778215cf8b66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790D 10356 bytes

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