Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15f5d6894cce799…

MALICIOUS

PDF

42.1 KB Created: 2020-03-17 23:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 732961ddcc33ccf91d102c94a745c2be SHA-1: 34bf5ff9a108368c82f15090e5869f436f4c8ab2 SHA-256: f15f5d6894cce799ce67e4b2a7f3efa09442c3b3e08b2b3155a8efdae68f2bf8
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 by the PDF_SEO_LINK_FARM heuristic. The embedded URLs and the document body suggest a lure related to product sales, specifically a 'Hydrovane 502 compressor for sale', which is likely a pretext to drive traffic to these external sites. The primary intent appears to be SEO manipulation or directing users to potentially malicious content hosted on these numerous domains.

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://avabaycompany.com/uploads/1/3/0/3/130379527/130379527.html#hydrovane+502+compressor+for+sale PDF link annotation
    • http://lisazollner.com/uploads/1/3/0/2/130272586/nijakodikota.pdfIn PDF document text
    • http://www.rebel-health.vip/uploads/1/3/0/5/130543240/fupimekifevuvigudov.pdfIn PDF document text
    • http://www.anchoredhomedesigns.com/uploads/1/3/0/6/130604896/7407452.pdfIn PDF document text
    • http://theapothecarygroup.org/uploads/1/3/0/5/130539768/gukavabodisigavoju.pdfIn PDF document text
    • http://southernhousepitality.net/uploads/1/3/0/4/130483207/691b384.pdfIn PDF document text
    • http://74-123-79-226.mgwnet.com/uploads/1/3/0/7/130774973/penalalobizu.pdfIn PDF document text
    • http://elettricaimpianti.org/uploads/1/3/0/4/130479123/rofawonufevenani.pdfIn PDF document text
    • http://nses.northsmithfieldschools.com/uploads/1/3/0/7/130740553/zafodoviwowaxakar.pdfIn PDF document text
    • http://dreamersandleaders.com/uploads/1/3/0/4/130476976/pufuwitunivabaguges.pdfIn PDF document text
    • http://jingchengguojiyulewangkexinma.f18.ebkf.org/uploads/1/3/0/7/130739766/mabomidokova.pdfIn PDF document text
    • http://grupovitlan.com/uploads/1/3/0/7/130738732/zivebanudavokoj-pinurefinefin-fuborudozi.pdfIn PDF document text
    • http://cadenceresource.com/uploads/1/3/0/6/130639448/1094609.pdfIn PDF document text
    • http://www.vap-ecigs.com/uploads/1/3/0/4/130436513/7320895.pdfIn PDF document text
    • http://stilettosandshotguns.com/uploads/1/3/0/4/130489052/2124646.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_off000079e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E2 8912 bytes
SHA-256: ee8ee3d91c69dc76d6ed6f43d3e927751a89b1952ade4c1b44bd0a95e0b5af76