Malicious PDF — malware analysis report

Static analysis result for SHA-256 068979c0b01d3bfd…

MALICIOUS

PDF

37.3 KB Created: 2020-07-10 02:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97fe9304a2bdff4694fae43739f882ef SHA-1: 56b6b786e99dd0f8d07d1c39034b163d73c5031b SHA-256: 068979c0b01d3bfd3d6132136759b5d470a728c418ef806e1b63f6169a8266ec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to domains associated with link farms. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. The document body, while appearing to be a worksheet, is heavily obfuscated and contains these numerous links, indicating a deceptive purpose.

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/wb?keyword=greatest%20common%20factor%20of%20polynomials%20worksheet
    • http://files.lgbtmalaysia.com/uploads/1/3/1/8/131859895/856bde00ec9e.pdf
    • http://files.studentworshipcollective.com/uploads/1/3/1/0/131071289/3112881.pdf
    • http://files.brouleepublicschool.com/uploads/1/3/2/3/132302924/xesonalejilili_kegap.pdf
    • http://files.greenforestzambia.com/uploads/1/3/2/6/132682134/tanizerurafalexemek.pdf
    • http://files.meladyluna.com/uploads/1/3/0/7/130740180/jofegebit.pdf
    • http://files.mizzodcast.com/uploads/1/3/2/6/132683088/rifalivelatij.pdf
    • http://files.amystephenmusic.com/uploads/1/3/0/7/130775186/c2371f7e1e.pdf
    • http://files.arnoldinnovations.ca/uploads/1/3/2/6/132682134/3634614.pdf
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.pdf
    • http://files.wagonwheelacres.com/uploads/1/3/1/3/131380236/1967631.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://nejazotewe.files.wordpress.com/2020/07/89357491804.pdf
    • https://poginuwikola.files.wordpress.com/2020/06/21805308622.pdf
    • https://fajadofavano.files.wordpress.com/2020/06/pomuwavovefexufija.pdf
    • https://wenajaxapat.files.wordpress.com/2020/07/pikogil.pdf
    • https://xazudazeliz.files.wordpress.com/2020/07/dikefalujipaxobamobovikir.pdf
    • https://dosuxotebim.files.wordpress.com/2020/06/fojokelibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/todexarim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xubeke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.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_off0000542b.bin
c95699b0b5922455415a03b37b912363654184cdd9af13c839afb2af650a845d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x542B 5332 bytes
font_01_sfnt_off00006637.bin
fea98f7d4a4e1e1b5bca3749c9d499deb61ae2f17582a8068a5e7fcd578a4427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6637 9804 bytes

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