Malicious PDF — malware analysis report

Static analysis result for SHA-256 51a79f772dfa39fb…

MALICIOUS

PDF

50.6 KB Created: 2020-10-18 13:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cc2b23a3d3f6612663a948dc81dc34ef SHA-1: 1cac2bdc31d5f0432b28ecc833e1a7442e4c4364 SHA-256: 51a79f772dfa39fb04ca2643f60c76e14956c7b3f1c27760f6018f1540be49fe
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, likely to host a phishing page or download further malware. The document body and embedded link structure suggest a lure related to streaming movies, attempting to trick the user into clicking the malicious URL. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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://cctraff.ru/strik?keyword=watch+annabelle+putlocker In PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/xorafe_poxakovafa_sikalopedolozig.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/fitonumijebarovepiso.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/efb45fb9b.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/902d2b82.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/fijolirixagubewovuf.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/2c21e350ba.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/jatelu-zukolugaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f873b1f36a8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f89ed2d231bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f874ee13eb2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f8b2ba99e2cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f88140e13683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f8a97a82e05a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86fc09059f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f87ec7a02bb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f8918756c9a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5f893e8d4005f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/fezuwawobenurizituwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4364/6357/files/mapefub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2259/6768/files/nudexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/writing_numbers_in_word_form_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/figagotugebusefiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3342/7619/files/41176174484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8253/8403/files/soil_transmitted_helminths_journals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5463/2612/files/xebivuxazug.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEA 4896 bytes
SHA-256: 5cd3fdb90e85cdc9c98ec2e8c02703e3c34e1c9bdfead9b9857f257d9489b27f
font_01_sfnt_off00008087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8087 14788 bytes
SHA-256: 46d3513a20aea0f956764c77bc96f5916fa74c06e114d619e4bb6ae1ad9396c1
font_02_sfnt_off0000aea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f