Malicious PDF — malware analysis report

Static analysis result for SHA-256 112c89e4d43e0f2b…

MALICIOUS

PDF

44.0 KB Created: 2020-10-25 07:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bd8e4d4f166d93f78a6183b92ac52589 SHA-1: 082cf36ff26882869d2eaa59746f6c9418a5bdf1 SHA-256: 112c89e4d43e0f2b89d4ff3d723212b62a1ad100c8fb27055b259965a9dfae01
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The presence of a large number of external PDF links suggests a link farm or SEO poisoning tactic. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed for 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=what+is+the+approximate+height+of+the+average+adult+in+centimeters%253F In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/91032511905.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/20653651416.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/21360038589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d21cf70-164f-4c71-bb3d-cd1abc9e3a35/nojufamiram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5867/1015/files/40614186545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5834/3317/files/favudegegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1979/2294/files/85941175120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0546/2696/files/wadedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7953/9134/files/vogoxabufubali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9270/3915/files/devils_bible_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0794/1027/files/76875743228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9228/4070/files/35002544621.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/34962845740.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/class_11_biology_chapter_6_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/rewifelukedemavuxowasuk.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/vepirogifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1318/3909/files/unblocked_movies_free_google_sites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/16241053756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/7179/9964/files/att_international_calling_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 5852 bytes
SHA-256: d38d79ef172e637d2454f72bab9b2959543b2a092d1fb1bc1f3904e1542b9ce4
font_01_sfnt_off00007fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA5 10212 bytes
SHA-256: 9f185972ea3c91b7bc370ae862e0d5423034021d06841a9a5cfc3390b5405d66

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