Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d1001e713672c1…

MALICIOUS

PDF

34.8 KB Created: 2020-04-01 18:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 14b1289941b53a5ec319a7cf58cb1092 SHA-1: b9fa5b0618949caacd412d826207fc9991f1271f SHA-256: 67d1001e713672c11feafdff4db0672e92b7de157a6135abae1d9e84d89615df
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly supports the malicious verdict, and the PDF structure suggests an attempt to manipulate search engine results or distribute payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 http://creativecsm.com/uploads/1/3/0/5/130590278/130590278.html#material+de+apoyo+sexto+grado+primer+trimestre
    • http://dualartls.com/uploads/1/3/1/1/131164034/pufup.pdf
    • http://celestediputada.com/uploads/1/3/0/2/130272353/f91fdf34.pdf
    • http://ms-wendys-class.com/uploads/1/3/0/8/130874317/6769977.pdf
    • http://vineyardsfarmexclusive.com/uploads/1/3/0/5/130540359/remalun-rugifa-rirunekeb-gitelimegav.pdf
    • http://timothyjcox.com/uploads/1/3/0/5/130546759/5091172.pdf
    • http://channingbenjamin.com/uploads/1/3/0/3/130323227/36d44ba07.pdf
    • http://26dos.com/uploads/1/3/1/0/131070597/e598496b08a.pdf
    • http://mgmalehair.com/uploads/1/3/0/7/130738845/67dd1.pdf
    • http://katherinegaulke.com/uploads/1/3/0/2/130271076/ladinu.pdf
    • http://bridgeportcommercepark.com/uploads/1/3/1/1/131164568/pemododidodawel.pdf
    • http://sjo105.com/uploads/1/3/1/4/131455463/wuvebe_genoganuvor_zomemelosafid_namodupimoxizon.pdf
    • http://bellevuetradingpost.net/uploads/1/3/0/6/130621765/f3348def85b98.pdf
    • http://indierockgear.net/uploads/1/3/1/0/131069978/d50b680.pdf
    • http://edwardsfinds.com/uploads/1/3/0/7/130775032/popirazepovu_raxozalafanusa_fokevu.pdf
    • http://billmurrays800number.com/uploads/1/3/0/4/130489418/5977853b517.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006099.bin
ff5cbdf74b9a27a1d210644997b3a10672a02676194fc1d1324a887db56e7cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 7396 bytes

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