Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0111c1db4d2ed6…

MALICIOUS

PDF

39.9 KB Created: 2020-08-17 17:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f2317db2dbdb902d60fb6ec5ecda8a SHA-1: daf3628be627f83e3e378c917e6961b4ceb32069 SHA-256: 0a0111c1db4d2ed62749e4d3f3bed8edd1fff763bc00f7863c21fbceecd1f472
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'lazard lcoe report'. The presence of many external PDF links suggests a link farm or redirection strategy to distribute 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=lazard+lcoe+report
    • http://files.leadersindustries.com/uploads/1/3/1/6/131606719/gotobot.pdf
    • http://zuremubo.yellowheadauctions.com/uploads/1/3/2/6/132681579/fobowiroxubulito.pdf
    • http://fixij.giuliapezzali.com/uploads/1/3/1/1/131163599/fexozonepaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1821/3797/files/19624440837.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4255/files/pivelidivifurakokara.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/93505170617.pdf
    • https://cdn.shopify.com/s/files/1/0436/9648/8613/files/gepugedajosebozamezat.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/sodium_bromide_msds.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/94336895800.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8916/files/31131491959.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/ruby_guessing_game.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/installing_act_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/28274844467.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_off00005d21.bin
169542a06b0d1d514ff7eae2f23b8e505d4c03579d0796bd6167ad98eca46fde
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D21 4880 bytes
font_01_sfnt_off00006dc7.bin
fd820b5aec39750e1fc5339d5a5dfaebae0ab0a699fd695c19172e46c7ee4cef
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 10992 bytes