Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0233bdc1e78ae57…

MALICIOUS

PDF

42.3 KB Created: 2020-03-29 22:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c5d9a19b70d31a2d9b48431c532e076f SHA-1: f664e6c5b54550065b5431a306b44a81c74e6a63 SHA-256: e0233bdc1e78ae57f643385a413314820a15045a8f728c3aa72c42559415bfd9
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, also contains URLs pointing to external resources. These links likely serve to manipulate search engine results or to distribute further malicious content, such as other PDFs or executables. The ML_NYX_PDF_MALICIOUS heuristic strongly supports the malicious nature of this file.

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://74-123-77-240.mgwnet.com/uploads/1/3/0/5/130550800/130550800.html#valores+eticos+fundamentales+libertad
    • http://daisyscloset.net/uploads/1/3/0/7/130740316/gogikagek.pdf
    • http://vitassbedandbath.com/uploads/1/3/0/7/130738614/gotewevate-baxibov-nokudig-welizof.pdf
    • http://coniferridgefarm.com/uploads/1/3/1/1/131163930/tiralarap.pdf
    • http://watronic.org/uploads/1/3/0/8/130814176/fekif_sugexewasugu_negeragezupage_losamivifox.pdf
    • http://hemisphereintegrationindy.com/uploads/1/3/0/3/130313127/xazamiremugu.pdf
    • http://diverdeclanphotography.com/uploads/1/3/0/6/130604091/6923624f9f54.pdf
    • http://coachty.net/uploads/1/3/0/6/130621973/guximokatutixizez.pdf
    • http://robertvjohnson.us/uploads/1/3/0/3/130323401/1012734.pdf
    • http://orlin.org/uploads/1/3/0/8/130873906/cc10e24d.pdf
    • http://mohammadshehataactor.com/uploads/1/3/0/6/130640191/raziligenisol_vulelisakiwewe_xodovodab_bupof.pdf
    • http://myforgottenself.com/uploads/1/3/0/3/130313641/kivowunekuw.pdf
    • http://daniel-alexandru-beres.com/uploads/1/3/0/6/130621058/e9266feaa32b.pdf
    • http://tcp-tcit.com/uploads/1/3/0/2/130287553/3402247.pdf
    • http://shampoochesbt.com/uploads/1/3/0/7/130740566/c421b688c.pdf
    • http://anniesditta.com/uploads/1/3/0/5/130539492/956484.pdf
    • http://lewishubbardgroup.org/uploads/1/3/0/8/130814297/laluwe_rajujuvejiziku.pdf
    • http://kesquakenbush.net/uploads/1/3/1/4/131407316/rusuvebel-jemagitoza.pdf
    • http://alovelydance.com/uploads/1/3/0/7/130776646/445212.pdf
    • http://smartestbusinessmodel.com/uploads/1/3/0/8/130813692/5459251.pdf
    • http://magneticmusings.com/uploads/1/3/0/5/130540155/8606931.pdf
    • http://mcpeakpughrealestate.com/uploads/1/3/0/4/130435819/6696850.pdf
    • http://mayaandmadison.com/uploads/1/3/1/0/131070236/94c51d.pdf
    • http://rubberglovefullofcandy.com/uploads/1/3/0/6/130604579/6821836.pdf
    • http://tideviewcider.ca/uploads/1/3/0/6/130620887/jozurapewexe-texivigipukami-zifozavu-pituxevit.pdf
    • http://clantoncomputers.com/uploads/1/3/0/7/130776401/a6975a9068.pdf
    • http://tideviewcider.ca/upload
    • 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_off00007c67.bin
c39f96afb7e41fd62f3b75fff41af5635717512e4c3ae4c1fd282449f953d101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C67 7908 bytes

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