Malicious PDF — malware analysis report

Static analysis result for SHA-256 e800df346a904270…

MALICIOUS

PDF

36.7 KB Created: 2020-08-17 15:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9df6ef7209ab2b113b88870a041bcf2 SHA-1: 7fb0acfcd6c4483e61fec93b18a99fc53f29a3f3 SHA-256: e800df346a904270a19f452d4d9942a2890d1c10b97fd114d185b180cd7a0d49
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of a link farm, containing numerous external links, with a primary malicious redirector identified. The document body, though partially corrupted, includes text suggesting a lure related to 'Fubotv guide not working' and references the wkhtmltopdf tool, indicating a potential attempt to disguise the malicious nature of the links. The presence of a malicious redirector URL strongly suggests an intent to lead the user to 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.com/pify?keyword=fubotv+guide+not+working
    • http://files.craigsterritt.com/uploads/1/3/1/3/131380397/8920195.pdf
    • http://files.themagicstudio.ca/uploads/1/3/0/7/130739919/8559639.pdf
    • http://moxopire.oumedicalimaging.com/uploads/1/3/0/7/130740596/xuzajito_juwemogolosok_jegafijova.pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/console_script_prodigy_hack_level.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/vibarixewigupi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4025/0775/files/newsela_answers_what_is_a_virus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/conundrum_anuj_dhar.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/mah_llb_cet_2019_hall_ticket.pdf
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/bloomberg_terminal_functions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9420/3806/files/zatan.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/pedim.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/narujavotekofiguvin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jazaw.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_off000053e8.bin
968480524e7850c9858107f6310dde6bf466c068e269f322ad8f5b50793c7bce
pdf-font-stream PDF embedded font (sfnt) at offset 0x53E8 4884 bytes
font_01_sfnt_off000064b0.bin
620c789381bc3ac91a92a1a58b63a5a63706b24a680ad85e4473aaf44e48f1f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 9828 bytes