Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba7c7295ba5e176…

MALICIOUS

PDF

43.2 KB Created: 2020-05-26 04:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 9c15558340a57c8c6854f8b63c5dd96c SHA-1: 6e2f0c0c4d950264b2328d2ecbdb52b7d28cf312 SHA-256: 9ba7c7295ba5e176eb84275eed496d6c7ace83f0fc002d61b689fd5c45e0ab3b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, identified as a link farm. The primary heuristic indicates a mass of external PDF links, with a dominant host being 'germany2connect.com'. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated, but the extensive link farm points towards a redirection or phishing scheme.

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 http://alwaysfuntravel.voyagerwebsites.com/uploads/1/3/0/6/130622038/130622038.html#baby+dust+method PDF link annotation
    • http://germany2connect.com/uploads/1/3/0/6/130621226/ba9abf8da925.pdfIn PDF document text
    • http://whalesharktourslapaz.com/uploads/1/3/0/8/130813654/32d3b18df2.pdfIn PDF document text
    • http://governmentcontractassist.com/uploads/1/3/0/8/130874282/7458712.pdfIn PDF document text
    • http://mcphc.bpmtc.com/uploads/1/3/0/9/130969448/8220953.pdfIn PDF document text
    • http://hydrahaircare.org/uploads/1/3/0/6/130605168/xidunitimepibakaj.pdfIn PDF document text
    • http://flathead-studios.com/uploads/1/3/1/4/131453896/xinadakidif_wuwakodezel_jodadiwisadowej_gofajafepi.pdfIn PDF document text
    • http://concreteprosci.com/uploads/1/3/1/4/131454219/risalawunipud-banopuwelimejom-xobojer.pdfIn PDF document text
    • http://whimsyandme.net/uploads/1/3/1/4/131437138/neraxofew_rukise_bolupo_kerifuwoze.pdfIn PDF document text
    • http://frannychicago.com/uploads/1/3/0/8/130874076/7730712.pdfIn PDF document text
    • http://voziga.com/uploads/1/3/1/4/131407102/92dbd9.pdfIn PDF document text
    • http://pureheartstoreonline.org/uploads/1/3/1/3/131384575/8691798.pdfIn PDF document text
    • http://beatysoberhouse.com/uploads/1/3/1/4/131407021/bamefujuduvarelites.pdfIn PDF document text
    • http://chestwarmer.com/uploads/1/3/1/3/131381804/porama_nunogixurijex_pisepiza.pdfIn PDF document text
    • http://pacllc.net/uploads/1/3/1/3/131398278/lefef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 11304 bytes
SHA-256: 82a526ec0d0aef8d93c419125c1a1df8f69e3f1dbacb9baf98996ed2b6cffab1