Malicious PDF — malware analysis report

Static analysis result for SHA-256 17bdf84953d42300…

MALICIOUS

PDF

132.5 KB Created: 2020-08-30 01:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c58b46f1f196f3490ab193b922d956f SHA-1: c197fc9f0852509682bb267676e72d753a2b6016 SHA-256: 17bdf84953d42300763825cf67e6eeddc3aa9b41a64a62cf8227a6238f0094dd
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, suggesting an attempt to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are benign but likely serve to obscure the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=sol+cuadratura+pluton+sinastria
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ab059d_18be7624be6040e19da96e4c96a02d95.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbd4a00385cd4245afcf397af0a223d2.pdf
    • https://static.usrfiles.com/ugd/16a96a_78935e39966640c9a76e69c3de7196ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0a6355140284d5ea78165582bcba1ee.pdf
    • https://static.usrfiles.com/ugd/c63dba_76301b15b12e476f8ad5cbb4ecf35e25.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70745323757.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/dovub.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/snow_leopard_iso.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/funedabinej.pdf
    • https://cdn.shopify.com/s/files/1/0438/4453/4429/files/kilutefuvibulamujak.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2264/files/xinuxozeloravaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/memorial_day_holiday_closed_sign_template.pdf
    • https://cdn.shopify.com/s/files/1/0464/6640/0414/files/root_android_7._0_without_computer.pdf
    • https://cdn.shopify.com/s/files/1/0440/0742/4158/files/posterior_knee_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/brandi_love_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/69514226228.pdf
    • https://cdn.shopify.com/s/files/1/0438/6645/6224/files/mitexozodimelumadatek.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_off0001d0a7.bin
75ba26e2288848b8ef38a717a13ca7d50bdeed0877ebadcd37a2efb83c4374b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0A7 5168 bytes
font_01_sfnt_off0001e23c.bin
6de84bbf5764f3a804744be51df2c81e5a3b307683d65cbb328d301b15ce82d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E23C 9948 bytes

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