Malicious PDF — malware analysis report

Static analysis result for SHA-256 0762d24a58dbbbc7…

MALICIOUS

PDF

64.6 KB Created: 2020-08-07 09:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d71917d8c5d448bb924d8c854bfa9dce SHA-1: 6f43614e4f203e2393df71768de0b88fa7430ae5 SHA-256: 0762d24a58dbbbc76ce70b8bb5c595ef4551fd1510956e30fe1d20278f9fb292
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting urgency, aligning with phishing lures. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm indicates an attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=antepartum+hemorrhage+nursing+management+pdf
    • http://files.crossroadsacousticfest.com/uploads/1/3/0/8/130814529/puzepufoj-dixagexozam.pdf
    • http://files.georgiamayfilms.com/uploads/1/3/1/3/131380063/2640912.pdf
    • http://files.swaggerstateathletics.com/uploads/1/3/1/6/131637656/3f8e38e3c5ab2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/brown_1981_rock_characterization_testing_and_monitoring.pdf
    • https://cdn.shopify.com/s/files/1/0447/2212/7004/files/pancreas_insulina_y_glucagon.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/40464469274.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/archeage_gear_guide.pdf
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/alveolitis_seca_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/kinoni_windows_server.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/30782377280.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/52595230906.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/lufavukemixadikuviv.pdf
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/chrome_extension_source_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/tupuxopaxamasinex.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4410/files/47004489320.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b22b.bin
e86e32d05611ec34840d09bb67e535af8f31cb80a326f6406c54621fca3f4381		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB22B 5296 bytes
font_01_sfnt_off0000c3fc.bin
d120cec855225c44b4e54571737fa705443a5f98bc999f6b8956c4b952bbcc25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FC 10180 bytes
font_02_sfnt_off0000e6c7.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 4324 bytes

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