Malicious PDF — malware analysis report

Static analysis result for SHA-256 df622662fa5c56d4…

MALICIOUS

PDF

38.5 KB Created: 2020-04-10 14:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f7bf5b9dba51bce075944bd817235a6 SHA-1: 1e2618c96791ec5f9a0313c7b82ec19e62ba4e3b SHA-256: df622662fa5c56d44d0d42587bf5c10ba071a825a2f62147b5b9a14942a2186e
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. This suggests a link farm or SEO poisoning tactic designed to drive traffic to potentially malicious sites. The document body, though heavily obfuscated, contains references to 'Stranger Things season 3 soundtrack' and the wkhtmltopdf tool, likely as a lure. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://penryarcher.com/uploads/1/3/0/4/130488370/130488370.html#stranger+things+season+3+soundtrack
    • http://heavenlygeshafarm.com/uploads/1/3/0/4/130489564/xexadulak.pdf
    • http://supercollectorcatalog.com/uploads/1/3/0/3/130313220/mijagizirezowu_fedaw_waguvekipezom_jefika.pdf
    • http://templespringsplaystudio.com/uploads/1/3/0/7/130775321/255dd56bf9c2e.pdf
    • http://kollectively-kittle.com/uploads/1/3/0/7/130738943/91c038.pdf
    • http://annieandbalen.com/uploads/1/3/1/4/131437087/dipuresotinemebi.pdf
    • http://carolinafinngard.es/uploads/1/3/1/0/131070826/roruminituz.pdf
    • http://karleejoblog.com/uploads/1/3/1/4/131437457/gixamomigupum.pdf
    • http://sciencelynx.com/uploads/1/3/1/3/131380066/1dd380.pdf
    • http://grupomillonario.net/uploads/1/3/0/6/130639426/topibujasawidupuv.pdf
    • http://foundationformigration.org/uploads/1/3/0/8/130814397/fa92b2938ef0e85.pdf
    • http://visioncarespecialists.net/uploads/1/3/0/7/130739173/zetawenemujazezubezi.pdf
    • http://sarahsbeautybox.com/uploads/1/3/0/5/130588320/8562153.pdf
    • http://managerlog.us/uploads/1/3/0/6/130620912/6199732.pdf
    • http://rachelmariephotos.com/uploads/1/3/0/5/130588304/ae007.pdf
    • http://snapchatwellbeing.com/uploads/1/3/0/4/130477193/xurif_vupidiragibow.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_off00006d94.bin
90a79a69db71b7e026c1ccc7448af51386147c9a3a347438324f48321f3b2dcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D94 8016 bytes