Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c8690df214d8ba…

MALICIOUS

PDF

56.0 KB Created: 2020-04-02 23:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2f66b42b5ef2448c2231a30c8d462f29 SHA-1: a08f758bb29ca61df6a6f457caa78b6497f1f9b6 SHA-256: 00c8690df214d8ba0ab1809ab8b1bb82dad31e08efdcd6a773bf8c83f6d83af1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, each hosting PDF files with numeric slugs, suggesting a tactic to manipulate search engine results or distribute malicious content. The ML classifier also strongly indicated maliciousness.

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://mychoicemedicalpractice.com/uploads/1/3/0/6/130639177/130639177.html#caida+libre+y+tiro+vertical
    • http://theheritagegroupagency.com/uploads/1/3/0/8/130814126/xudepij.pdf
    • http://pmifox.net/uploads/1/3/0/6/130620449/bedamuposesakopop.pdf
    • http://jonnsallskapet.com/uploads/1/3/0/6/130640044/dobigexogafasake.pdf
    • http://banriapharma.com/uploads/1/3/0/7/130775929/zirilelaloxog.pdf
    • http://omnispeak.org/uploads/1/3/1/0/131070722/kenugogozujamebavab.pdf
    • http://myhealthcoachusa.com/uploads/1/3/0/5/130589179/pajakev.pdf
    • http://nichellerenee.solutions/uploads/1/3/0/7/130739084/wugebezumezuruza.pdf
    • http://vinaga.org/uploads/1/3/0/7/130738628/300ec39f64c.pdf
    • http://carecdc.net/uploads/1/3/0/3/130379199/7280643.pdf
    • http://utahfilmcomposer.com/uploads/1/3/0/2/130289765/2171546.pdf
    • http://findpeaceatlast.com/uploads/1/3/0/5/130588944/mezuwu.pdf
    • http://aiyoga.org/uploads/1/3/0/6/130639656/9505030.pdf
    • http://newflavorhouseinc.com/uploads/1/3/0/4/130476492/9083390.pdf
    • http://jupitrans.pl/uploads/1/3/0/7/130776582/jatosebejisasizotili.pdf
    • http://tuckerhillfarmvt.com/uploads/1/3/0/7/130775156/7a7d3.pdf
    • http://giraffeseniors.com/uploads/1/3/1/3/131379329/b0f6a09.pdf
    • http://jfmproresumes.net/uploads/1/3/0/6/130639017/9328229.pdf
    • http://travel-glam.com/uploads/1/3/0/5/130538946/poxalunofis_nefixarijibe_wasimurif_fexixurabez.pdf
    • http://fabiodalgrande.com/uploads/1/3/0/7/130776415/61801c8e9e21bbe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a082.bin
eecbd5cc6bfc0bc650d6a4766e8869a95c78d0657d1f940c130b0ac65828ba2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA082 9776 bytes
font_01_sfnt_off0000c384.bin
cc36eeca4e976365c19b974e54b01c81d5da79b0f4790e63b03650ba4c07585e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC384 3584 bytes

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