Malicious PDF — malware analysis report

Static analysis result for SHA-256 0440ccf8621dcddd…

MALICIOUS

PDF

52.1 KB Created: 2020-08-19 11:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24201d1c235d54f5b12b04ee1b78eb09 SHA-1: b9486b4324a2d41b9bcd28d215f41ef798b3c44d SHA-256: 0440ccf8621dcddd2669f85b815c863d76c6671d8f1d594335b1ad80e73a4254
154 Risk Score

Malware Insights

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

The PDF document contains a lure for a government scheme application form, which redirects to a known malicious URL. The presence of numerous external links suggests a link farm designed to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious redirection attempt.

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=khadya+suraksha+yojana+application+form
    • http://files.newwavevolleyballclub.com/uploads/1/3/1/4/131437147/gisaki.pdf
    • http://files.doorwaytodignityabuserecovery.com/uploads/1/3/1/4/131438474/kenope_babuwupukiw.pdf
    • http://files.parisaforoutan.net/uploads/1/3/1/3/131398475/bikax.pdf
    • http://moduza.mywoodmoor.com/uploads/1/3/1/8/131856372/wixabosukatef-fedaronibime.pdf
    • http://togijop.acauseforcrafting.org/uploads/1/3/0/8/130814124/8f60fb63175fc8c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/mawijitiwebutedes.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/82794736648.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/ikea_qatar_bed_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/rowajeralisenez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/50515916873.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/boldly_i_approach_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/zowananotagapefixem.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/angielski_b2_gramatyka.pdf
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/99365725309.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/31156240609.pdf
    • https://cdn.shopify.com/s/files/1/0436/5844/4958/files/restraining_order_texas.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e0b.bin
136027eaab6cb532d4a5a4c54e10b5de231b7b6d90f5c4c316e4056d07217bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 5604 bytes
font_01_sfnt_off000070ff.bin
922357e756a3c0eeed0c26cc9eab562b6f86432e690aec086c7819729fe29dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FF 9852 bytes
font_02_sfnt_off00009308.bin
de8ca794555191fd2e3433d1ecb6ebd9898907ef754d3b27935d327cab414caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9308 8220 bytes
font_03_sfnt_off0000aedb.bin
3a2d304351d565026ddb5bdf31e727d1baaec0ce5ae5842703d59722964a6996		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDB 5248 bytes

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