Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6ac5d6fa994afb…

MALICIOUS

PDF

61.4 KB Created: 2020-10-02 22:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9df43f3b2c84a5cf08117c81820890ab SHA-1: 776ee1dc885f210a773353ef6ec994564b3ae53e SHA-256: 7b6ac5d6fa994afba0b20073cb7bdcfbaf0e3895de553e675d6932235bb2a1e1
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://gettraff.ru/strik?keyword=aayirathil+oruvan+full+movie++tamilp, is flagged as a malicious redirector. The document body also contains this URL, suggesting it is intended to trick users into clicking it. The presence of numerous other PDF links, many pointing to strikinglycdn.com, indicates a link farm or SEO poisoning attempt to drive traffic to the malicious URL. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer the malicious intent.

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://gettraff.ru/strik?keyword=aayirathil+oruvan+full+movie++tamilp In PDF document text
    • http://files.trackingclubofma.com/uploads/1/3/1/4/131406688/danetotej-fimumora-vonexidito-zigavanoru.pdfIn PDF document text
    • http://files.erinmakesstuff.com/uploads/1/3/2/6/132682819/vawerol_megetamek_gozoxa_mekimote.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/pobovoduvumemafejaxose.pdfIn PDF document text
    • https://site-1036926.mozfiles.com/files/1036926/42141981726.pdfIn PDF document text
    • https://site-1036728.mozfiles.com/files/1036728/22187206520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/845c0c1e-170c-4de1-842b-5c7e5456d30c/pubuwafexep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be29232-376d-4a0a-a91d-ba9fd3459f71/90735141546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2331b5e0-db3e-4d2d-9454-6cf288a06284/12479779829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ff1dfa-f8fa-4c22-8df3-49229023afc6/tepajenolugosuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a67c86b7-946a-4d41-b299-ceab2e0d1572/xixakiwarimimapalelixil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3424/9896/files/serial_number_for_sony_vegas_pro_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0083/4466/files/string_or_binary_data_would_be_truncated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2749/2764/files/borobekabenil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/evenflo_triumph_car_seat_manual.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCB 5112 bytes
SHA-256: c1df6db4a9222ece4ded873b8eb13fc8f3469f932e30a1d305f6d6365f26d462
font_01_sfnt_off0000af18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF18 10436 bytes
SHA-256: 70d7d8f3a614bee734b468979cb69261767cdbd11337879e33babc117dd1e184
font_02_sfnt_off0000d30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30D 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

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