Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e907aa33069892…

MALICIOUS

PDF

51.7 KB Created: 2020-10-17 00:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: bd9cf922273d4eba696f378c006447b4 SHA-1: 4cbd6b387dab3e63f05b2f68a72041931330019c SHA-256: a2e907aa330698922c4f8eaaf71e8885414e1461f20c9aa8eff8d26e34010349
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, ttraff.com, which is disguised as a search result for medical information. The document also contains a large number of external PDF links, many of which point to user-generated content platforms, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the embedded URL heuristic confirms the presence of a suspicious link.

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/123?keyword=echographie+du+tube+digestif+pdf In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/kazinoxem_zawamazoxenufe.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/05d8e0.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/d8a1fcb.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/devuxupujikeninaferi.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/6d371b4a243e2c5.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/706a53901fae66.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/lezukozikiwinenirib.pdfIn PDF document text
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/e640f607f.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/90689.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/tefukumibo.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/6c30da0c-0b51-4cae-9b6b-24a72761a01d/riwiwuvonoxegasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db19c547-0104-4994-94f4-692622676b3e/holland_code_personality_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a966edaa-2e1d-45ab-9a26-8ee9e55d05a4/42658353313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7421/5331/files/mopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9977/4364/files/kemiruzababuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9376/0434/files/masorixekofegem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/5734354410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/nidinukiradas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7130/0268/files/homtom_ht70_battery_replacement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5286/2113/files/richmond_christian_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1127/1588/files/wow_lvl_60-70_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7800/6966/files/17351957984.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_off0000852d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852D 5484 bytes
SHA-256: a250d8ccc1dddd537e11faf7c07f40ef17aefe095a024727c21ae306997e61ca
font_01_sfnt_off000097c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97C3 12740 bytes
SHA-256: d9be9f30c22edad436528a3f7f7c50a23b754e8c93e59846f67b10c526c53e91

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