Malicious PDF — malware analysis report

Static analysis result for SHA-256 58812b49f76e5775…

MALICIOUS

PDF

42.7 KB Created: 2020-03-14 19:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3639b75dbef2995d8d1b917b1bc9a55a SHA-1: d66119f3b34f7bd36f6fdaae88534cd68a898e53 SHA-256: 58812b49f76e5775c742c21c3c920087b080bde013322243886d827eb6367495
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, includes a URL that matches one of the extracted links. This suggests the primary purpose is to redirect users to a network of other PDF documents, likely for SEO spam or to distribute further malicious content. No scripts were extracted from this sample.

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://x0169003xstreamtravel.xsideas.com/uploads/1/3/0/7/130739128/130739128.html#antalyaspor+forma+2019+fiyatlar%C4%B1
    • http://mrssiegelsecondgrade.com/uploads/1/3/0/4/130483273/8932801.pdf
    • http://cramerclass.com/uploads/1/3/0/3/130323291/veramuvejen_poramozana_fizosamenol_deworunegiruvo.pdf
    • http://www.eternalfreespirit.com/uploads/1/3/0/6/130620982/fasugufonukuwozila.pdf
    • http://tds.greenpc.com/uploads/1/3/0/8/130814469/7707046.pdf
    • http://myprimaryfoods.global/uploads/1/3/0/4/130483263/gokuje-danosevizelup-sufuf.pdf
    • http://legaleasecanada.com/uploads/1/3/0/7/130740624/xekakuxugal.pdf
    • http://buyphilproperties.com/uploads/1/3/0/3/130323957/bumutejezu_kasemasaxeti_labuvoniwujuw.pdf
    • http://youtubevideoindir.club/uploads/1/3/0/5/130545480/vijaxibefijib.pdf
    • http://kabambataxexpress.com/uploads/1/3/0/5/130542924/8245993.pdf
    • http://jodiaholmberg.com/uploads/1/3/0/8/130874031/lokuveba_sisamejonevaro_vinajazokejowum_fagutufa.pdf
    • http://chervenhouse.com/uploads/1/3/0/2/130287313/e3d675fd6ef.pdf
    • http://www.leaedgar.com/uploads/1/3/0/4/130476395/pusukiv_fukef.pdf
    • http://www.elitevp.com/uploads/1/3/0/2/130289448/7847d34ad059e4.pdf
    • http://jacksonbell.net/uploads/1/3/0/5/130588654/5161837.pdf
    • http://elixirhealthsolutions.com/uploads/1/3/0/5/130545884/bc6f9798a0.pdf
    • http://miriamgracepayne.com/uploads/1/3/0/5/130540795/babf55ae4698c6c.pdf
    • http://www.equineministries.org/uploads/1/3/0/3/130323302/peditafituladef-jazufokun.pdf
    • http://productionairservices.com/uploads/1/3/0/5/130543682/xugimas_nuwusa.pdf
    • http://zunzuncafe.com/uploads/1/3/0/2/130271117/navuretepun.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_off00007c2c.bin
767f93177d6c16ab83038c233def2947ab8d5a80d9beb8818506229d34cababc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2C 9232 bytes

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