Malicious PDF — malware analysis report

Static analysis result for SHA-256 649a633f5639aed9…

MALICIOUS

PDF

50.6 KB Created: 2020-08-05 18:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e2b945f8c01038f02434cc2f96bcd1e SHA-1: 0545840c775c4fa30c09c08d16b32d2d97d6d46c SHA-256: 649a633f5639aed941c427cc00e2e964739600d0d2a21ee334c1d2eb4aa5e410
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body also contains a direct link to this malicious redirector, suggesting an attempt to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=twilight+life+and+death+pdf+download+free
    • http://files.albertvilleband.com/uploads/1/3/0/7/130740205/c642fdf1cc5c.pdf
    • http://welutasot.crueltyfreecuisine.com/uploads/1/3/1/8/131856725/3886133.pdf
    • http://files.womensquartermarathon.com/uploads/1/3/1/3/131379971/2364456.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/97743793825.pdf
    • https://cdn.shopify.com/s/files/1/0440/6876/5861/files/lejurelafejuzej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/67456345234.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/arduino_map_float.pdf
    • https://cdn.shopify.com/s/files/1/0428/5693/9676/files/aditya_birla_mutual_fund_sip_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/35934510905.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faxusumowavunisipor.pdf
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/zesagadirepasu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/biogenic_elements.pdf
    • https://cdn.shopify.com/s/files/1/0429/2771/8567/files/sifekekedi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/61613536431.pdf
    • https://cdn.shopify.com/s/files/1/0431/3851/5095/files/zotaketuxelaxel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/libros_sobre_generos_literarios.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/one_o_clock_jump_sheet_music.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_off0000866d.bin
06329b88746e3940f7a08b6ca6983db9b940aaf2e10991c21d8d1b289154b590		 pdf-font-stream PDF embedded font (sfnt) at offset 0x866D 5164 bytes
font_01_sfnt_off0000980f.bin
e5aa8e8389364f74be92c6a9b70d7da0b88372d7f9661882ca40c21d3f745786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x980F 10956 bytes

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