Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c459ae3e0f2862…

MALICIOUS

PDF

46.0 KB Created: 2020-10-28 04:17:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 798419f931be097ac38d74bfd026d8d5 SHA-1: 71a0b82f2c49a2720e88906fec37d503d0c5beb9 SHA-256: 30c459ae3e0f286263de1394b5977b362ef4f56e8957d4acf0e64500c53ab161
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, disguised with a search query keyword. This indicates a phishing attempt to redirect users to malicious content. The PDF also contains a large number of external links, many pointing to S3 buckets, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

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.me/123?keyword=mike+meyers+comptia+net+worth
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f87ca8e696b1.pdf
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f89490099b6d.pdf
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f8b097fcc9bd.pdf
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f91126ea6fc7.pdf
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f8a5113305bf.pdf
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f874ff6db0a7.pdf
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5f92a53d2244d.pdf
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5f963e73844ad.pdf
    • https://cdn-cms.f-static.net/uploads/4408598/normal_5f9604053fc7d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bizamesuwepe/mavogetagokex.pdf
    • https://s3.amazonaws.com/memul/mergers_and_acquisitions_in_india.pdf
    • https://s3.amazonaws.com/vezumobigodub/75256574262.pdf
    • https://s3.amazonaws.com/zetare/6957779596.pdf
    • https://cdn.shopify.com/s/files/1/0483/5291/9703/files/getaluwexemekirawilu.pdf
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/general_anaesthetic_drugs.pdf
    • https://s3.amazonaws.com/zetare/mesase.pdf
    • https://s3.amazonaws.com/fikuvine/eagleton_ideology.pdf
    • https://s3.amazonaws.com/leguvefu/fusatesatewaxesagik.pdf
    • https://s3.amazonaws.com/wefadep/aufklrung_epoche_literatur.pdf
    • https://uploads.strikinglycdn.com/files/f287d0eb-0553-4c40-b8f2-27f63fb2f15a/mukexafokereve.pdf
    • https://uploads.strikinglycdn.com/files/dd53ac9d-421e-4f7d-82ae-0cd53f029c5a/nezomejagutusib.pdf
    • https://uploads.strikinglycdn.com/files/860e2ab9-769a-486d-8633-db78ba06bd7c/32874915551.pdf
    • https://uploads.strikinglycdn.com/files/a8730a7f-9722-47ef-8704-e00da265860b/aptoide_apk_download.pdf
    • https://uploads.strikinglycdn.com/files/edced4c5-676a-47fd-b14d-a289e922e128/vipemopowamifukotipamum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000722d.bin
3b2b6a2abba64d84be6c30c22b7b78fb2982c3652ad6c56a724d8a7d7c21415a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722D 5404 bytes
font_01_sfnt_off00008479.bin
405befcc32da21be77202a8cce583725fd2291e80920582606da02e2031b0496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8479 11348 bytes

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