Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a061f62c8f195f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 23:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14de984fc63fef37882eb41c4409158 SHA-1: 1ef21fba589d3124233d9ee7753ae12a3bb25340 SHA-256: 72a061f62c8f195f6c425ea070cd82bae842d4d3b58c49bcd986d6730f4ab81a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a specific malicious redirector URL, suggesting a social engineering lure to download further content or visit malicious sites. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document attempts to trick the user into installing something, which is a common tactic for malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=caste+validity+application+form+marathi+pdf
    • http://files.defense-elec-corp.com/uploads/1/3/0/7/130739926/tebaxelewasovub.pdf
    • http://kojivan.scsoaventura.com/uploads/1/3/0/7/130739777/8557193.pdf
    • http://files.paxonphysics.com/uploads/1/3/1/6/131637635/lufiverobanolofax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/fusionner_2_en_un_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2954/files/wobazedexajusetegemidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/facebook_code_hack.pdf
    • https://cdn.shopify.com/s/files/1/0432/0306/8068/files/givozunofaderapijin.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9303/files/40787670311.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/fikaxojebube.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/94539773550.pdf
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/problem_solving_and_selected_topics_in_number_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/85498386158.pdf
    • https://cdn.shopify.com/s/files/1/0440/0952/1317/files/20424279562.pdf
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/91915783131.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.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_off00005f20.bin
3b53fd66bfd41848fde019721887bdcea19d2fdd07153fb31ced6d1398863133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F20 5460 bytes
font_01_sfnt_off00007193.bin
d4de3912e9ffcce248c7fec1966dd33996d275d3253775ce9c62536dbc383e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7193 10636 bytes

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