Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c2063875d15227…

MALICIOUS

PDF

44.1 KB Created: 2020-08-26 10:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09f9be79e72a857b3e9c90a6210aabaf SHA-1: 3c78adad770f5bf96a70a3ccd791f241dc48085e SHA-256: 58c2063875d15227f0c1db6bd5d226592e5f9af642ffd9d64cd008a04009bb9c
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=simcity+5+guide'. This suggests the document's primary purpose is to lure users to malicious websites through a link farm. No scripts were extracted, limiting further analysis of execution behavior.

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/pify?keyword=simcity+5+guide
    • http://jevopabap.kariccohairdesign.com/uploads/1/3/0/8/130874426/puwodefiwobat_loverisilut_nikolizodarozut_pedif.pdf
    • http://files.ddebyme.com/uploads/1/3/2/6/132696104/wumorowudepanisisipi.pdf
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/96977746266.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/m1_garand_fallout_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/modelos_pedagogicos_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/asco_numatics_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/tuniwudur.pdf
    • https://cdn.shopify.com/s/files/1/0445/8453/4180/files/past_simple_irregular_verbs_game.pdf
    • https://cdn.shopify.com/s/files/1/0431/7210/2301/files/alluvial_soil_information_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/35335847952.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/59575740442.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/38492490581.pdf
    • https://cdn.shopify.com/s/files/1/0436/6175/4518/files/gina_asthma_2020.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_off00006f4c.bin
ad5af43163abf52ae053e64f6fbdda7d72140fe8b2868edbb2370a23d6e66e73
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 5072 bytes
font_01_sfnt_off0000807e.bin
1803f6666f5deb761edfe78a9f25c45fafbfbed38ae9681e18daccf90b335c73
pdf-font-stream PDF embedded font (sfnt) at offset 0x807E 10516 bytes