Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28ce0208478d6d7…

MALICIOUS

PDF

54.1 KB Created: 2020-11-03 21:33:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 10c8392762757ac54191bded1a3796a2 SHA-1: d4a0faf45b04822b6f97d1b317e25c11cec5cbe2 SHA-256: f28ce0208478d6d723545238fd07e2de2005368ea6a0571b33e33963cea04959
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/strik?keyword=mary+of+bethany+and+mary+magdalene In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5f99ad03281d9.pdfIn PDF document text
    • https://jodotabamusunew.weebly.com/uploads/1/3/4/4/134402052/wuvovedopapene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_5f95a2c13a0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5f976f7436959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409095/normal_5f95457017eac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f9e123bbb17c.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/874f40fa-9670-4879-bd9c-c5eb07bdd688/stranded_lullaby_lyrics_demo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267dcb10-fb6c-4545-86cf-b36504b75467/47469067964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82582d18-dda0-48a4-ac7a-5efce078cbb1/20838750573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b963e309-432d-409d-91c7-c348e382a0d1/12089277398.pdfIn PDF document text
    • https://s3.amazonaws.com/lanowilovuviwib/google_chrome_change_default_search_engine.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_off0000958b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958B 5392 bytes
SHA-256: 8ad9de3fb2693a72765f9c881b19c809ed49c01b1fe105082cf504a5eb4c2416
font_01_sfnt_off0000a7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CD 10452 bytes
SHA-256: 56898fe6c1345b050840a8ffa74464664281753882987fbf41c70646446faad6

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