Malicious PDF — malware analysis report

Static analysis result for SHA-256 114488a0d60c2a87…

MALICIOUS

PDF

40.2 KB Created: 2020-04-16 20:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2100487544b5dc290e2f9b9658f907a1 SHA-1: 9a5c32656916cda421dccaa1abe65ca601ac28cf SHA-256: 114488a0d60c2a876d6e399287759aa53b6babe76829bc91f0e929a10636441a
136 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on suspicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or redirection scheme. While no scripts were explicitly extracted, the presence of numerous external URLs and the ML classification strongly suggest malicious intent, likely to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://kyflowernseed.com/uploads/1/3/0/7/130776325/130776325.html#uniforme+cristiano+ronaldo+juventus+infantil
    • http://americanmartyrsfamiliesinfaith.com/uploads/1/3/0/6/130621645/c407adc14f23.pdf
    • http://cidcomlogistics.co.uk/uploads/1/3/0/5/130588417/jomivowifosevu.pdf
    • http://wallstreetbitcoinalliance.org/uploads/1/3/0/6/130620948/vagugipabi.pdf
    • http://ssthequeenzcollection.com/uploads/1/3/1/4/131454771/jepimaxavibe_ditusor_mivef_mesaxu.pdf
    • http://ldnsoccerblog.net/uploads/1/3/0/7/130738896/6e6a9a3714.pdf
    • http://astopintime.net/uploads/1/3/0/5/130550879/moxemizak_kuvekegujezemu_panuwigu_dafupetukesojus.pdf
    • http://isswave.org/uploads/1/3/0/5/130541950/pobinamurefo.pdf
    • https://produto.com
    • https://produto
    • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007286.bin
1e55232005f7697eec3f5662cb44dafcab6454c592b964d4cbaadc92b14f4448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7286 10180 bytes

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