Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7336f82a6978d3…

MALICIOUS

PDF

42.5 KB Created: 2020-03-18 19:43:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: beab4ab440bb8dbe08ba7a92a2f2f142 SHA-1: 77e0be9ebe450b5bef3a481a97cadf04190eaf9f SHA-256: 7a7336f82a6978d3ec4cf2e75e77835605ae0a58692edcd76fbf7421267b7423
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous embedded links, suggesting a link farm or phishing attempt. The document body, though partially obfuscated, contains a URL related to 'honeywell alarm panel troubleshooting', which, combined with the 'SE_MFA_LURE' and 'SE_CALLBACK_LURE' heuristics, indicates a likely attempt to phish for credentials or engage in a tech-support scam. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://65bancker.com/uploads/1/3/0/7/130740019/130740019.html#honeywell+alarm+panel+troubleshooting PDF link annotation
    • http://nikkileeyoga.com/uploads/1/3/0/6/130605442/jegelejus_wokimekub.pdfIn PDF document text
    • http://hostmaster.thecreativeshowcase.co.uk/uploads/1/3/0/2/130287939/wakiriselej.pdfIn PDF document text
    • http://summitcityexposure.com/uploads/1/3/0/5/130539090/raxatebiko.pdfIn PDF document text
    • http://thaiontheisland.com/uploads/1/3/0/3/130313088/vovunutexitasi.pdfIn PDF document text
    • http://soilnstruments.com/uploads/1/3/0/6/130604986/4343ac4b8.pdfIn PDF document text
    • http://crowdplaymedia.com/uploads/1/3/0/6/130603785/gugiraku_vatokevezurak_notavimosa_zupetugogurino.pdfIn PDF document text
    • http://modernretailcollective.store/uploads/1/3/0/2/130270775/3124712.pdfIn PDF document text
    • http://hostmaster.buycassis.com/uploads/1/3/0/6/130603931/xumebe.pdfIn PDF document text
    • http://yogasoutherner.com/uploads/1/3/0/6/130621451/nekafa.pdfIn PDF document text
    • http://appiassociation.org/uploads/1/3/0/5/130551231/4572561.pdfIn PDF document text
    • http://gazlaybrewingco.com/uploads/1/3/0/7/130739714/4805327.pdfIn PDF document text
    • http://miaimeifs.com/uploads/1/3/0/7/130775205/tovalog_zomefa_fozanakakoso.pdfIn PDF document text
    • http://sowerscontractingncllc.com/uploads/1/3/0/7/130739011/xesibize.pdfIn PDF document text
    • http://cutthecordonyourcable.com/uploads/1/3/0/6/130604950/rirurepiwopajeb.pdfIn PDF document text
    • http://ashleymarini.com/uploads/1/3/0/6/130621279/3fd86a64f501.pdfIn PDF document text
    • http://lilianbeautycenterspa.com/uploads/1/3/0/2/130289587/1238875.pdfIn 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6A 7868 bytes
SHA-256: 61c2d36996fe967e7bee70ecb93414002b48adf915ae66f3aac7aa979144abc3