Malicious PDF — malware analysis report

Static analysis result for SHA-256 682a8252fbb1294b…

MALICIOUS

PDF

60.8 KB Created: 2020-10-22 07:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ea7e9fc4d458b3ad7b09c3e3514f8845 SHA-1: 9f327e09a8830520e37dd6ae8721f40f816c7e98 SHA-256: 682a8252fbb1294bcfc0e1b2239cc75a371f08683cddd343ae300652f60677b6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to redirector infrastructure or are part of a link farm, suggesting a malicious intent to direct users to harmful sites. The document body, though partially corrupted, contains text related to 'Goodwe inverter installation manual' and a URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/pify?keyword=goodwe+inverter+installation+manual In PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/wafeg_tamifigerej_pimuk_dojufewisezane.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/fodekabokogano_jotaziwebelo_bimonimodal.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/betajisimokotukileke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_5f8f9f843b081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f87219db74c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f907411a5987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374860/normal_5f8b13e0cffdd.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/vigudaxaxije_vubevigodimaziw.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/1467567.pdfIn PDF document text
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/jexiledekomira-sexivab-fosewafuvusazet-turasenezesaxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0990/0183/files/gebeguvudeduwoginegizor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8385/2704/files/vogue_definition_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8427/6415/files/monopoly_ultimate_banking_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1411/7293/files/satipatthana_sutta_discourses_goenka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2642/9605/files/pumowofipadowiwajex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8526/4575/files/sunday_night_tv_guide_townsville.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5245/6346/files/lord_of_the_flies_allegory_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1103/0170/files/54156394083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/general_anaesthetic_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1412/2404/files/chet_atkins_walk_dont_run.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 3084 bytes
SHA-256: a2682e119cc22c40d0c312dd43317aa2bbe05cb2fb8b49381b6a7b11fa5d4c6b
font_01_sfnt_off00008fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC8 5156 bytes
SHA-256: f794045fa61930fc0853c28e922309e0e9e65263cb2ab7d167bf9c3806ecbf04
font_02_sfnt_off0000a14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA14C 6564 bytes
SHA-256: 9fc079f0e20d7922884957414dc46371bdc1ab85270e53420f3639840e73162a
font_03_sfnt_off0000b2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B6 15848 bytes
SHA-256: c553a9caf02a291fa49135dd949de5545138765357afb33ca0396bcdaaf3389c