Malicious PDF — malware analysis report

Static analysis result for SHA-256 19113877900f2668…

MALICIOUS

PDF

89.3 KB Created: 2021-02-18 15:52:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2124fc967c2a0cde1baf1fdd43c59b21 SHA-1: d49adfbcff5fb2b902dba6a4f1917b33fe698e98 SHA-256: 19113877900f266829bc15500a6dfc489a5f7707ac34517288e45e9d5bca7eac
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a high number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary external link points to a URL that appears to be part of a link farm or SEO manipulation scheme. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect the user to potentially malicious websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/strik?utm_term=how+do+i+adjust+the+speed+on+my+kitchenaid+mixer PDF link annotation
    • https://megidawuxuta.weebly.com/uploads/1/3/4/7/134729580/2142657.pdfIn PDF document text
    • http://tabelib.iblogger.org/88828558414.pdfIn PDF document text
    • https://vodemilofokuse.weebly.com/uploads/1/3/4/2/134235674/dufalunofexigafaran.pdfIn PDF document text
    • https://dibetoxiruvon.weebly.com/uploads/1/3/5/4/135400859/dawozosuvukok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481821/normal_6007699e169ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492281/normal_5febf8344eca3.pdfIn PDF document text
    • https://gunujudota.weebly.com/uploads/1/3/2/3/132303168/gagusu-makad.pdfIn PDF document text
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/zawewegem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/gerasuvaxevogaben.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/maxekupiwamowibefe.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/honeywell_cad_files.pdfIn PDF document text
    • http://sevobademimebij.epizy.com/96653621104.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/fogiramofudirirefageje.pdfIn PDF document text
    • http://mujunego.epizy.com/covering_letter_template_monster.pdfIn PDF document text
    • http://bejiteviv.epizy.com/online_flyer_templates_word.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/icy_veins_disc_priest_pvp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/gbrmpa_annual_report.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B52 5644 bytes
SHA-256: a34df633a84b41c0fb363955c54499fcb92d90638468ad89c7b4b72da0c44178
font_01_sfnt_off00012e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E78 12328 bytes
SHA-256: a57216694aff85a34591256fa3fd8c7ff15be9b290d68245034c5dea9ea61d88

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