Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa80f70b9089eab2…

MALICIOUS

PDF

53.6 KB Created: 2020-08-30 07:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fac1302d2feab5d666eeddd3de9e4fd5 SHA-1: ad9f756136aa05f7c66b825d9ce62dbbe658c669 SHA-256: aa80f70b9089eab2e3427ba50a3c6f1eed6928010432a0ec65b8e0eb8faac75e
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised with a keyword-rich title to appear as a legitimate document. The ML classifier strongly indicates maliciousness. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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/wix?keyword=manual+de+cultivo+de+cilantro+pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/encyclopedia_of_computer_science_and_technology.pdf
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/11718771569.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5790/files/the_best_live_scores_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/95573180572.pdf
    • https://static.usrfiles.com/ugd/b8c837_114e5d7d0dcc4541a4bc9ba8b55104f5.pdf
    • https://static.usrfiles.com/ugd/8de238_37e451fdf9b443aabc0eb17fdc61c96c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec3edfbd5ac74a0994f2828b8d9f8f64.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_6f6e8dd8425a4bcba3a3f90b7c08b507.pdf
    • https://static.usrfiles.com/ugd/63d3ad_7989e7fb308b4d32a94ad4c9613babf0.pdf
    • https://cdn.shopify.com/s/files/1/0430/5112/2842/files/15199215095.pdf
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/2853041794.pdf
    • https://cdn.shopify.com/s/files/1/0463/6085/4683/files/sisuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/0311/5680/files/wejifape.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072ba.bin
9d5182b5dcb523f084d1b06bb7ad60ae96b7c874156b4c0caf8f00f039ef7043
pdf-font-stream PDF embedded font (sfnt) at offset 0x72BA 5036 bytes
font_01_sfnt_off000083eb.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 1800 bytes
font_02_sfnt_off00008c79.bin
f9282ef382e8bd3917fc660b858ffa5548dc35cd72e268a7992a27f4a69c30e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 11360 bytes
font_03_sfnt_off0000b18a.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0
pdf-font-stream PDF embedded font (sfnt) at offset 0xB18A 16312 bytes