Malicious PDF — malware analysis report

Static analysis result for SHA-256 06004647747ba01b…

MALICIOUS

PDF

51.2 KB Created: 2020-08-23 01:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c02a559d57fd25e96875e34dc196020 SHA-1: 6ac85215878957bc3a06ad5a0b66d8af1fa628f1 SHA-256: 06004647747ba01bf4f50cd17adc927f02aa8334ec1b0529202c94e1008a2eb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. Additionally, the document hosts a large number of external PDF links, many pointing to Shopify, suggesting an attempt to create a link farm or distribute further malicious content. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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.cc/pify?keyword=benzinpreis+app+android+kostenlos
    • http://files.emi-ceramics.com/uploads/1/3/1/8/131857213/4461338.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/free_duckduckgo_browser_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/black_wedge_platform_shoes_womens.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/logical_and_analytical_reasoning_questions_for_class_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/asco_solenoid_valve.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/concrete_slab_construction.pdf
    • https://cdn.shopify.com/s/files/1/0437/8663/3377/files/errata_sheet_cplr.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/bafg_hessen_formblatt_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/neet_biology_chapter_wise_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/bts_idol_official_music_video.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/movies_sites_bollywood_and_hollywood.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/tiberebawokekomexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/nadepolo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/54969616362.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/wugebud.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006323.bin
5c96381b2956ba85bdc606e02b4bc67750563a6a571ffb0d67253edb336a5a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 6476 bytes
font_01_sfnt_off00007329.bin
a1a1c1a84c1dabbe1a9d1e709dc77530ee9002d57e5e8d212427d473eda41792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 5116 bytes
font_02_sfnt_off0000849f.bin
109c62e998c3c176465f17902c864c4622f0bdfb817123247fd88d4498d064a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849F 11064 bytes
font_03_sfnt_off0000a8ec.bin
354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EC 16036 bytes

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